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Finding the Fourth Proportional to 163,630.70, 245,446.05 and 156,718.70

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Solution

The fourth proportional to 163,630.70, 245,446.05 and 156,718.70 is: 235,078.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,630.70 : 245,446.05 = 156,718.70 : x
  2. Step 2: Convert to fraction form
    163,630.70/245,446.05 = 156,718.70/x
  3. Step 3: Cross multiply
    163,630.70x = 245,446.05 × 156,718.70
  4. Step 4: Simplify right side
    163,630.70x = 38,465,985,876.14
  5. Step 5: Solve for x
    x = 38,465,985,876.14/163,630.70
  6. Step 6: Final answer
    x = 235,078.05

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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.