Home / 87,975,230.80-131,850,871.80-78,345,432.40

Finding the Fourth Proportional to 87,975,230.80, 131,850,871.80 and 78,345,432.40

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Solution

The fourth proportional to 87,975,230.80, 131,850,871.80 and 78,345,432.40 is: 117,418,430.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,975,230.80 : 131,850,871.80 = 78,345,432.40 : x
  2. Step 2: Convert to fraction form
    87,975,230.80/131,850,871.80 = 78,345,432.40/x
  3. Step 3: Cross multiply
    87,975,230.80x = 131,850,871.80 × 78,345,432.40
  4. Step 4: Simplify right side
    87,975,230.80x = 10,329,913,563,487,966
  5. Step 5: Solve for x
    x = 10,329,913,563,487,966/87,975,230.80
  6. Step 6: Final answer
    x = 117,418,430.96

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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.