Home / 165,018,630-227,727,521.91-90,679,209.78

Finding the Fourth Proportional to 165,018,630, 227,727,521.91 and 90,679,209.78

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Solution

The fourth proportional to 165,018,630, 227,727,521.91 and 90,679,209.78 is: 125,138,305.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,018,630 : 227,727,521.91 = 90,679,209.78 : x
  2. Step 2: Convert to fraction form
    165,018,630/227,727,521.91 = 90,679,209.78/x
  3. Step 3: Cross multiply
    165,018,630x = 227,727,521.91 × 90,679,209.78
  4. Step 4: Simplify right side
    165,018,630x = 20,650,151,731,956,436
  5. Step 5: Solve for x
    x = 20,650,151,731,956,436/165,018,630
  6. Step 6: Final answer
    x = 125,138,305.49

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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.