Home / 136,947.60-205,421.40-99,331.20

Finding the Fourth Proportional to 136,947.60, 205,421.40 and 99,331.20

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Solution

The fourth proportional to 136,947.60, 205,421.40 and 99,331.20 is: 148,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,947.60 : 205,421.40 = 99,331.20 : x
  2. Step 2: Convert to fraction form
    136,947.60/205,421.40 = 99,331.20/x
  3. Step 3: Cross multiply
    136,947.60x = 205,421.40 × 99,331.20
  4. Step 4: Simplify right side
    136,947.60x = 20,404,754,167.68
  5. Step 5: Solve for x
    x = 20,404,754,167.68/136,947.60
  6. Step 6: Final answer
    x = 148,996.80

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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.