Home / 156,369,270-215,786,722.54-86,753,156.20

Finding the Fourth Proportional to 156,369,270, 215,786,722.54 and 86,753,156.20

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Solution

The fourth proportional to 156,369,270, 215,786,722.54 and 86,753,156.20 is: 119,717,763.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,369,270 : 215,786,722.54 = 86,753,156.20 : x
  2. Step 2: Convert to fraction form
    156,369,270/215,786,722.54 = 86,753,156.20/x
  3. Step 3: Cross multiply
    156,369,270x = 215,786,722.54 × 86,753,156.20
  4. Step 4: Simplify right side
    156,369,270x = 18,720,179,246,398,680
  5. Step 5: Solve for x
    x = 18,720,179,246,398,680/156,369,270
  6. Step 6: Final answer
    x = 119,717,763.26

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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.