Home / 97,644.90-146,780.55-90,711.30

Finding the Fourth Proportional to 97,644.90, 146,780.55 and 90,711.30

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Solution

The fourth proportional to 97,644.90, 146,780.55 and 90,711.30 is: 136,357.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,644.90 : 146,780.55 = 90,711.30 : x
  2. Step 2: Convert to fraction form
    97,644.90/146,780.55 = 90,711.30/x
  3. Step 3: Cross multiply
    97,644.90x = 146,780.55 × 90,711.30
  4. Step 4: Simplify right side
    97,644.90x = 13,314,654,505.22
  5. Step 5: Solve for x
    x = 13,314,654,505.22/97,644.90
  6. Step 6: Final answer
    x = 136,357.91

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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.