Home / 112,422.40-155,124.49-66,475.65

Finding the Fourth Proportional to 112,422.40, 155,124.49 and 66,475.65

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Solution

The fourth proportional to 112,422.40, 155,124.49 and 66,475.65 is: 91,725.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,422.40 : 155,124.49 = 66,475.65 : x
  2. Step 2: Convert to fraction form
    112,422.40/155,124.49 = 66,475.65/x
  3. Step 3: Cross multiply
    112,422.40x = 155,124.49 × 66,475.65
  4. Step 4: Simplify right side
    112,422.40x = 10,312,002,030.80
  5. Step 5: Solve for x
    x = 10,312,002,030.80/112,422.40
  6. Step 6: Final answer
    x = 91,725.51

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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.