Home / 156,638.13-216,158.16-85,017.52

Finding the Fourth Proportional to 156,638.13, 216,158.16 and 85,017.52

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Solution

The fourth proportional to 156,638.13, 216,158.16 and 85,017.52 is: 117,322.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,638.13 : 216,158.16 = 85,017.52 : x
  2. Step 2: Convert to fraction form
    156,638.13/216,158.16 = 85,017.52/x
  3. Step 3: Cross multiply
    156,638.13x = 216,158.16 × 85,017.52
  4. Step 4: Simplify right side
    156,638.13x = 18,377,230,690.96
  5. Step 5: Solve for x
    x = 18,377,230,690.96/156,638.13
  6. Step 6: Final answer
    x = 117,322.84

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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.