Home / 100,218,781-138,299,565.54-58,968,345.16

Finding the Fourth Proportional to 100,218,781, 138,299,565.54 and 58,968,345.16

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Solution

The fourth proportional to 100,218,781, 138,299,565.54 and 58,968,345.16 is: 81,374,932.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,218,781 : 138,299,565.54 = 58,968,345.16 : x
  2. Step 2: Convert to fraction form
    100,218,781/138,299,565.54 = 58,968,345.16/x
  3. Step 3: Cross multiply
    100,218,781x = 138,299,565.54 × 58,968,345.16
  4. Step 4: Simplify right side
    100,218,781x = 8,155,296,516,240,761
  5. Step 5: Solve for x
    x = 8,155,296,516,240,761/100,218,781
  6. Step 6: Final answer
    x = 81,374,932.27

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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.