Home / 125,290,731.44-172,975,337.88-78,920,732.72

Finding the Fourth Proportional to 125,290,731.44, 172,975,337.88 and 78,920,732.72

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Solution

The fourth proportional to 125,290,731.44, 172,975,337.88 and 78,920,732.72 is: 108,957,304.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,290,731.44 : 172,975,337.88 = 78,920,732.72 : x
  2. Step 2: Convert to fraction form
    125,290,731.44/172,975,337.88 = 78,920,732.72/x
  3. Step 3: Cross multiply
    125,290,731.44x = 172,975,337.88 × 78,920,732.72
  4. Step 4: Simplify right side
    125,290,731.44x = 13,651,340,407,979,170
  5. Step 5: Solve for x
    x = 13,651,340,407,979,170/125,290,731.44
  6. Step 6: Final answer
    x = 108,957,304.75

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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.