Home / 138,663.59-191,355.26-75,001.38

Finding the Fourth Proportional to 138,663.59, 191,355.26 and 75,001.38

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Solution

The fourth proportional to 138,663.59, 191,355.26 and 75,001.38 is: 103,501.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,663.59 : 191,355.26 = 75,001.38 : x
  2. Step 2: Convert to fraction form
    138,663.59/191,355.26 = 75,001.38/x
  3. Step 3: Cross multiply
    138,663.59x = 191,355.26 × 75,001.38
  4. Step 4: Simplify right side
    138,663.59x = 14,351,908,195.25
  5. Step 5: Solve for x
    x = 14,351,908,195.25/138,663.59
  6. Step 6: Final answer
    x = 103,501.64

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Double scale
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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.