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Finding the Fourth Proportional to 156,283,301, 215,670,957.30 and 87,605,669

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Solution

The fourth proportional to 156,283,301, 215,670,957.30 and 87,605,669 is: 120,895,824.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,283,301 : 215,670,957.30 = 87,605,669 : x
  2. Step 2: Convert to fraction form
    156,283,301/215,670,957.30 = 87,605,669/x
  3. Step 3: Cross multiply
    156,283,301x = 215,670,957.30 × 87,605,669
  4. Step 4: Simplify right side
    156,283,301x = 18,893,998,498,136,936
  5. Step 5: Solve for x
    x = 18,893,998,498,136,936/156,283,301
  6. Step 6: Final answer
    x = 120,895,824.30

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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.