Home / 123,535.50-170,479.80-66,947.28

Finding the Fourth Proportional to 123,535.50, 170,479.80 and 66,947.28

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Solution

The fourth proportional to 123,535.50, 170,479.80 and 66,947.28 is: 92,387.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,535.50 : 170,479.80 = 66,947.28 : x
  2. Step 2: Convert to fraction form
    123,535.50/170,479.80 = 66,947.28/x
  3. Step 3: Cross multiply
    123,535.50x = 170,479.80 × 66,947.28
  4. Step 4: Simplify right side
    123,535.50x = 11,413,158,904.94
  5. Step 5: Solve for x
    x = 11,413,158,904.94/123,535.50
  6. Step 6: Final answer
    x = 92,387.69

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1.5x scale

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.