Home / 112,702.08-155,529.14-61,718.15

Finding the Fourth Proportional to 112,702.08, 155,529.14 and 61,718.15

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Solution

The fourth proportional to 112,702.08, 155,529.14 and 61,718.15 is: 85,171.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,702.08 : 155,529.14 = 61,718.15 : x
  2. Step 2: Convert to fraction form
    112,702.08/155,529.14 = 61,718.15/x
  3. Step 3: Cross multiply
    112,702.08x = 155,529.14 × 61,718.15
  4. Step 4: Simplify right side
    112,702.08x = 9,598,971,103.57
  5. Step 5: Solve for x
    x = 9,598,971,103.57/112,702.08
  6. Step 6: Final answer
    x = 85,171.19

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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.