Home / 129,556.98-178,693.46-85,870.52

Finding the Fourth Proportional to 129,556.98, 178,693.46 and 85,870.52

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Solution

The fourth proportional to 129,556.98, 178,693.46 and 85,870.52 is: 118,438.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,556.98 : 178,693.46 = 85,870.52 : x
  2. Step 2: Convert to fraction form
    129,556.98/178,693.46 = 85,870.52/x
  3. Step 3: Cross multiply
    129,556.98x = 178,693.46 × 85,870.52
  4. Step 4: Simplify right side
    129,556.98x = 15,344,500,248.12
  5. Step 5: Solve for x
    x = 15,344,500,248.12/129,556.98
  6. Step 6: Final answer
    x = 118,438.24

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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.