Home / 156,699.40-235,049.10-90,344.20

Finding the Fourth Proportional to 156,699.40, 235,049.10 and 90,344.20

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Solution

The fourth proportional to 156,699.40, 235,049.10 and 90,344.20 is: 135,516.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,699.40 : 235,049.10 = 90,344.20 : x
  2. Step 2: Convert to fraction form
    156,699.40/235,049.10 = 90,344.20/x
  3. Step 3: Cross multiply
    156,699.40x = 235,049.10 × 90,344.20
  4. Step 4: Simplify right side
    156,699.40x = 21,235,322,900.22
  5. Step 5: Solve for x
    x = 21,235,322,900.22/156,699.40
  6. Step 6: Final answer
    x = 135,516.30

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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.