Home / 156,758.76-216,328.65-85,140.18

Finding the Fourth Proportional to 156,758.76, 216,328.65 and 85,140.18

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Solution

The fourth proportional to 156,758.76, 216,328.65 and 85,140.18 is: 117,494.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,758.76 : 216,328.65 = 85,140.18 : x
  2. Step 2: Convert to fraction form
    156,758.76/216,328.65 = 85,140.18/x
  3. Step 3: Cross multiply
    156,758.76x = 216,328.65 × 85,140.18
  4. Step 4: Simplify right side
    156,758.76x = 18,418,260,200.16
  5. Step 5: Solve for x
    x = 18,418,260,200.16/156,758.76
  6. Step 6: Final answer
    x = 117,494.30

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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.