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Finding the Fourth Proportional to 104,459.40, 156,689.10 and 79,576.20

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Solution

The fourth proportional to 104,459.40, 156,689.10 and 79,576.20 is: 119,364.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,459.40 : 156,689.10 = 79,576.20 : x
  2. Step 2: Convert to fraction form
    104,459.40/156,689.10 = 79,576.20/x
  3. Step 3: Cross multiply
    104,459.40x = 156,689.10 × 79,576.20
  4. Step 4: Simplify right side
    104,459.40x = 12,468,723,159.42
  5. Step 5: Solve for x
    x = 12,468,723,159.42/104,459.40
  6. Step 6: Final answer
    x = 119,364.30

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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.