Home / 133,013,472.80-199,520,209.20-78,593,914.40

Finding the Fourth Proportional to 133,013,472.80, 199,520,209.20 and 78,593,914.40

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Solution

The fourth proportional to 133,013,472.80, 199,520,209.20 and 78,593,914.40 is: 117,890,871.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,013,472.80 : 199,520,209.20 = 78,593,914.40 : x
  2. Step 2: Convert to fraction form
    133,013,472.80/199,520,209.20 = 78,593,914.40/x
  3. Step 3: Cross multiply
    133,013,472.80x = 199,520,209.20 × 78,593,914.40
  4. Step 4: Simplify right side
    133,013,472.80x = 15,681,074,242,934,892
  5. Step 5: Solve for x
    x = 15,681,074,242,934,892/133,013,472.80
  6. Step 6: Final answer
    x = 117,890,871.60

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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.