Home / 125,342.72-172,925.76-80,022.40

Finding the Fourth Proportional to 125,342.72, 172,925.76 and 80,022.40

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Solution

The fourth proportional to 125,342.72, 172,925.76 and 80,022.40 is: 110,400.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,342.72 : 172,925.76 = 80,022.40 : x
  2. Step 2: Convert to fraction form
    125,342.72/172,925.76 = 80,022.40/x
  3. Step 3: Cross multiply
    125,342.72x = 172,925.76 × 80,022.40
  4. Step 4: Simplify right side
    125,342.72x = 13,837,934,337.02
  5. Step 5: Solve for x
    x = 13,837,934,337.02/125,342.72
  6. Step 6: Final answer
    x = 110,400.78

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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.