Home / 139,968,165.30-209,952,247.95-103,688,459.70

Finding the Fourth Proportional to 139,968,165.30, 209,952,247.95 and 103,688,459.70

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Solution

The fourth proportional to 139,968,165.30, 209,952,247.95 and 103,688,459.70 is: 155,532,689.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,165.30 : 209,952,247.95 = 103,688,459.70 : x
  2. Step 2: Convert to fraction form
    139,968,165.30/209,952,247.95 = 103,688,459.70/x
  3. Step 3: Cross multiply
    139,968,165.30x = 209,952,247.95 × 103,688,459.70
  4. Step 4: Simplify right side
    139,968,165.30x = 21,769,625,200,487,984
  5. Step 5: Solve for x
    x = 21,769,625,200,487,984/139,968,165.30
  6. Step 6: Final answer
    x = 155,532,689.55

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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.