Home / 138,663.48-191,355.45-75,001.13

Finding the Fourth Proportional to 138,663.48, 191,355.45 and 75,001.13

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Solution

The fourth proportional to 138,663.48, 191,355.45 and 75,001.13 is: 103,501.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,663.48 : 191,355.45 = 75,001.13 : x
  2. Step 2: Convert to fraction form
    138,663.48/191,355.45 = 75,001.13/x
  3. Step 3: Cross multiply
    138,663.48x = 191,355.45 × 75,001.13
  4. Step 4: Simplify right side
    138,663.48x = 14,351,874,024.88
  5. Step 5: Solve for x
    x = 14,351,874,024.88/138,663.48
  6. Step 6: Final answer
    x = 103,501.47

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Double scale
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Similar ratio
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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.