Home / 112,686.62-155,502.72-61,698.42

Finding the Fourth Proportional to 112,686.62, 155,502.72 and 61,698.42

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Solution

The fourth proportional to 112,686.62, 155,502.72 and 61,698.42 is: 85,141.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,686.62 : 155,502.72 = 61,698.42 : x
  2. Step 2: Convert to fraction form
    112,686.62/155,502.72 = 61,698.42/x
  3. Step 3: Cross multiply
    112,686.62x = 155,502.72 × 61,698.42
  4. Step 4: Simplify right side
    112,686.62x = 9,594,272,129.70
  5. Step 5: Solve for x
    x = 9,594,272,129.70/112,686.62
  6. Step 6: Final answer
    x = 85,141.19

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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.