Home / 90,329.34-135,445.14-71,729.04

Finding the Fourth Proportional to 90,329.34, 135,445.14 and 71,729.04

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Solution

The fourth proportional to 90,329.34, 135,445.14 and 71,729.04 is: 107,554.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,329.34 : 135,445.14 = 71,729.04 : x
  2. Step 2: Convert to fraction form
    90,329.34/135,445.14 = 71,729.04/x
  3. Step 3: Cross multiply
    90,329.34x = 135,445.14 × 71,729.04
  4. Step 4: Simplify right side
    90,329.34x = 9,715,349,864.87
  5. Step 5: Solve for x
    x = 9,715,349,864.87/90,329.34
  6. Step 6: Final answer
    x = 107,554.75

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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.