Home / 156,621.40-234,932.10-90,266.20

Finding the Fourth Proportional to 156,621.40, 234,932.10 and 90,266.20

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Solution

The fourth proportional to 156,621.40, 234,932.10 and 90,266.20 is: 135,399.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,621.40 : 234,932.10 = 90,266.20 : x
  2. Step 2: Convert to fraction form
    156,621.40/234,932.10 = 90,266.20/x
  3. Step 3: Cross multiply
    156,621.40x = 234,932.10 × 90,266.20
  4. Step 4: Simplify right side
    156,621.40x = 21,206,427,925.02
  5. Step 5: Solve for x
    x = 21,206,427,925.02/156,621.40
  6. Step 6: Final answer
    x = 135,399.30

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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.