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Finding the Fourth Proportional to 162,918,304.80, 244,660,892.40 and 86,390,800.80

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Solution

The fourth proportional to 162,918,304.80, 244,660,892.40 and 86,390,800.80 is: 129,736,498.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,918,304.80 : 244,660,892.40 = 86,390,800.80 : x
  2. Step 2: Convert to fraction form
    162,918,304.80/244,660,892.40 = 86,390,800.80/x
  3. Step 3: Cross multiply
    162,918,304.80x = 244,660,892.40 × 86,390,800.80
  4. Step 4: Simplify right side
    162,918,304.80x = 21,136,450,418,878,632
  5. Step 5: Solve for x
    x = 21,136,450,418,878,632/162,918,304.80
  6. Step 6: Final answer
    x = 129,736,498.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.