Home / 99,629.38-137,487.65-54,307.36

Finding the Fourth Proportional to 99,629.38, 137,487.65 and 54,307.36

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Solution

The fourth proportional to 99,629.38, 137,487.65 and 54,307.36 is: 74,943.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,629.38 : 137,487.65 = 54,307.36 : x
  2. Step 2: Convert to fraction form
    99,629.38/137,487.65 = 54,307.36/x
  3. Step 3: Cross multiply
    99,629.38x = 137,487.65 × 54,307.36
  4. Step 4: Simplify right side
    99,629.38x = 7,466,590,688.85
  5. Step 5: Solve for x
    x = 7,466,590,688.85/99,629.38
  6. Step 6: Final answer
    x = 74,943.66

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1.5x scale

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.