Home / 156,781.23-216,354.51-85,159.68

Finding the Fourth Proportional to 156,781.23, 216,354.51 and 85,159.68

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Solution

The fourth proportional to 156,781.23, 216,354.51 and 85,159.68 is: 117,518.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,781.23 : 216,354.51 = 85,159.68 : x
  2. Step 2: Convert to fraction form
    156,781.23/216,354.51 = 85,159.68/x
  3. Step 3: Cross multiply
    156,781.23x = 216,354.51 × 85,159.68
  4. Step 4: Simplify right side
    156,781.23x = 18,424,680,838.16
  5. Step 5: Solve for x
    x = 18,424,680,838.16/156,781.23
  6. Step 6: Final answer
    x = 117,518.41

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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.