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Finding the Fourth Proportional to 130,920.96, 180,670.08 and 71,304.96

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Solution

The fourth proportional to 130,920.96, 180,670.08 and 71,304.96 is: 98,400.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,920.96 : 180,670.08 = 71,304.96 : x
  2. Step 2: Convert to fraction form
    130,920.96/180,670.08 = 71,304.96/x
  3. Step 3: Cross multiply
    130,920.96x = 180,670.08 × 71,304.96
  4. Step 4: Simplify right side
    130,920.96x = 12,882,672,827.60
  5. Step 5: Solve for x
    x = 12,882,672,827.60/130,920.96
  6. Step 6: Final answer
    x = 98,400.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.