Home / 156,631.40-234,947.10-90,276.20

Finding the Fourth Proportional to 156,631.40, 234,947.10 and 90,276.20

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Solution

The fourth proportional to 156,631.40, 234,947.10 and 90,276.20 is: 135,414.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,631.40 : 234,947.10 = 90,276.20 : x
  2. Step 2: Convert to fraction form
    156,631.40/234,947.10 = 90,276.20/x
  3. Step 3: Cross multiply
    156,631.40x = 234,947.10 × 90,276.20
  4. Step 4: Simplify right side
    156,631.40x = 21,210,131,389.02
  5. Step 5: Solve for x
    x = 21,210,131,389.02/156,631.40
  6. Step 6: Final answer
    x = 135,414.30

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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.