Home / 142,633.59-213,995.15-85,772.94

Finding the Fourth Proportional to 142,633.59, 213,995.15 and 85,772.94

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Solution

The fourth proportional to 142,633.59, 213,995.15 and 85,772.94 is: 128,686.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,633.59 : 213,995.15 = 85,772.94 : x
  2. Step 2: Convert to fraction form
    142,633.59/213,995.15 = 85,772.94/x
  3. Step 3: Cross multiply
    142,633.59x = 213,995.15 × 85,772.94
  4. Step 4: Simplify right side
    142,633.59x = 18,354,992,732.38
  5. Step 5: Solve for x
    x = 18,354,992,732.38/142,633.59
  6. Step 6: Final answer
    x = 128,686.33

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1.5x scale

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.