Home / 142,211.27-213,309.21-72,088.76

Finding the Fourth Proportional to 142,211.27, 213,309.21 and 72,088.76

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Solution

The fourth proportional to 142,211.27, 213,309.21 and 72,088.76 is: 108,129.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,211.27 : 213,309.21 = 72,088.76 : x
  2. Step 2: Convert to fraction form
    142,211.27/213,309.21 = 72,088.76/x
  3. Step 3: Cross multiply
    142,211.27x = 213,309.21 × 72,088.76
  4. Step 4: Simplify right side
    142,211.27x = 15,377,196,445.48
  5. Step 5: Solve for x
    x = 15,377,196,445.48/142,211.27
  6. Step 6: Final answer
    x = 108,129.24

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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.