Home / 139,715,543,489.49-209,608,583,652.95-38,986,326,457.45

Finding the Fourth Proportional to 139,715,543,489.49, 209,608,583,652.95 and 38,986,326,457.45

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Solution

The fourth proportional to 139,715,543,489.49, 209,608,583,652.95 and 38,986,326,457.45 is: 58,489,331,011.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,715,543,489.49 : 209,608,583,652.95 = 38,986,326,457.45 : x
  2. Step 2: Convert to fraction form
    139,715,543,489.49/209,608,583,652.95 = 38,986,326,457.45/x
  3. Step 3: Cross multiply
    139,715,543,489.49x = 209,608,583,652.95 × 38,986,326,457.45
  4. Step 4: Simplify right side
    139,715,543,489.49x = 8,171,868,670,577,207,148,544
  5. Step 5: Solve for x
    x = 8,171,868,670,577,207,148,544/139,715,543,489.49
  6. Step 6: Final answer
    x = 58,489,331,011.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.