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Finding the Fourth Proportional to 159,620,061.20, 220,275,587.03 and 86,281,203.20

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Solution

The fourth proportional to 159,620,061.20, 220,275,587.03 and 86,281,203.20 is: 119,068,007.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,620,061.20 : 220,275,587.03 = 86,281,203.20 : x
  2. Step 2: Convert to fraction form
    159,620,061.20/220,275,587.03 = 86,281,203.20/x
  3. Step 3: Cross multiply
    159,620,061.20x = 220,275,587.03 × 86,281,203.20
  4. Step 4: Simplify right side
    159,620,061.20x = 19,005,642,683,001,928
  5. Step 5: Solve for x
    x = 19,005,642,683,001,928/159,620,061.20
  6. Step 6: Final answer
    x = 119,068,007.75

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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.