Home / 100,218,853-138,299,664.90-58,968,417.16

Finding the Fourth Proportional to 100,218,853, 138,299,664.90 and 58,968,417.16

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Solution

The fourth proportional to 100,218,853, 138,299,664.90 and 58,968,417.16 is: 81,375,031.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,218,853 : 138,299,664.90 = 58,968,417.16 : x
  2. Step 2: Convert to fraction form
    100,218,853/138,299,664.90 = 58,968,417.16/x
  3. Step 3: Cross multiply
    100,218,853x = 138,299,664.90 × 58,968,417.16
  4. Step 4: Simplify right side
    100,218,853x = 8,155,312,332,911,410
  5. Step 5: Solve for x
    x = 8,155,312,332,911,410/100,218,853
  6. Step 6: Final answer
    x = 81,375,031.63

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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.