Home / 123,947.20-185,702.10-101,639.80

Finding the Fourth Proportional to 123,947.20, 185,702.10 and 101,639.80

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Solution

The fourth proportional to 123,947.20, 185,702.10 and 101,639.80 is: 152,280.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,947.20 : 185,702.10 = 101,639.80 : x
  2. Step 2: Convert to fraction form
    123,947.20/185,702.10 = 101,639.80/x
  3. Step 3: Cross multiply
    123,947.20x = 185,702.10 × 101,639.80
  4. Step 4: Simplify right side
    123,947.20x = 18,874,724,303.58
  5. Step 5: Solve for x
    x = 18,874,724,303.58/123,947.20
  6. Step 6: Final answer
    x = 152,280.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.