Home / 156,899.30-216,521.31-85,279.13

Finding the Fourth Proportional to 156,899.30, 216,521.31 and 85,279.13

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Solution

The fourth proportional to 156,899.30, 216,521.31 and 85,279.13 is: 117,685.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,899.30 : 216,521.31 = 85,279.13 : x
  2. Step 2: Convert to fraction form
    156,899.30/216,521.31 = 85,279.13/x
  3. Step 3: Cross multiply
    156,899.30x = 216,521.31 × 85,279.13
  4. Step 4: Simplify right side
    156,899.30x = 18,464,748,943.26
  5. Step 5: Solve for x
    x = 18,464,748,943.26/156,899.30
  6. Step 6: Final answer
    x = 117,685.35

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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.