Home / 156,018,251.28-215,201,515.08-100,334,070.90

Finding the Fourth Proportional to 156,018,251.28, 215,201,515.08 and 100,334,070.90

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Solution

The fourth proportional to 156,018,251.28, 215,201,515.08 and 100,334,070.90 is: 138,394,347.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,018,251.28 : 215,201,515.08 = 100,334,070.90 : x
  2. Step 2: Convert to fraction form
    156,018,251.28/215,201,515.08 = 100,334,070.90/x
  3. Step 3: Cross multiply
    156,018,251.28x = 215,201,515.08 × 100,334,070.90
  4. Step 4: Simplify right side
    156,018,251.28x = 21,592,044,071,824,140
  5. Step 5: Solve for x
    x = 21,592,044,071,824,140/156,018,251.28
  6. Step 6: Final answer
    x = 138,394,347.42

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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.