Home / 99,666.70-137,505.55-63,876.45

Finding the Fourth Proportional to 99,666.70, 137,505.55 and 63,876.45

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Solution

The fourth proportional to 99,666.70, 137,505.55 and 63,876.45 is: 88,127.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,666.70 : 137,505.55 = 63,876.45 : x
  2. Step 2: Convert to fraction form
    99,666.70/137,505.55 = 63,876.45/x
  3. Step 3: Cross multiply
    99,666.70x = 137,505.55 × 63,876.45
  4. Step 4: Simplify right side
    99,666.70x = 8,783,366,389.30
  5. Step 5: Solve for x
    x = 8,783,366,389.30/99,666.70
  6. Step 6: Final answer
    x = 88,127.39

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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.