Home / 131,505.20-197,257.80-38,020.40

Finding the Fourth Proportional to 131,505.20, 197,257.80 and 38,020.40

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Solution

The fourth proportional to 131,505.20, 197,257.80 and 38,020.40 is: 57,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,505.20 : 197,257.80 = 38,020.40 : x
  2. Step 2: Convert to fraction form
    131,505.20/197,257.80 = 38,020.40/x
  3. Step 3: Cross multiply
    131,505.20x = 197,257.80 × 38,020.40
  4. Step 4: Simplify right side
    131,505.20x = 7,499,820,459.12
  5. Step 5: Solve for x
    x = 7,499,820,459.12/131,505.20
  6. Step 6: Final answer
    x = 57,030.60

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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.