Home / 137,909.55-190,303.50-77,475.45

Finding the Fourth Proportional to 137,909.55, 190,303.50 and 77,475.45

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Solution

The fourth proportional to 137,909.55, 190,303.50 and 77,475.45 is: 106,909.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,909.55 : 190,303.50 = 77,475.45 : x
  2. Step 2: Convert to fraction form
    137,909.55/190,303.50 = 77,475.45/x
  3. Step 3: Cross multiply
    137,909.55x = 190,303.50 × 77,475.45
  4. Step 4: Simplify right side
    137,909.55x = 14,743,849,299.08
  5. Step 5: Solve for x
    x = 14,743,849,299.08/137,909.55
  6. Step 6: Final answer
    x = 106,909.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.