Home / 102,686.32-141,702.05-57,355.28

Finding the Fourth Proportional to 102,686.32, 141,702.05 and 57,355.28

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Solution

The fourth proportional to 102,686.32, 141,702.05 and 57,355.28 is: 79,147.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,686.32 : 141,702.05 = 57,355.28 : x
  2. Step 2: Convert to fraction form
    102,686.32/141,702.05 = 57,355.28/x
  3. Step 3: Cross multiply
    102,686.32x = 141,702.05 × 57,355.28
  4. Step 4: Simplify right side
    102,686.32x = 8,127,360,189.20
  5. Step 5: Solve for x
    x = 8,127,360,189.20/102,686.32
  6. Step 6: Final answer
    x = 79,147.45

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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.