Home / 156,781.23-216,359.73-85,162.65

Finding the Fourth Proportional to 156,781.23, 216,359.73 and 85,162.65

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Solution

The fourth proportional to 156,781.23, 216,359.73 and 85,162.65 is: 117,525.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,781.23 : 216,359.73 = 85,162.65 : x
  2. Step 2: Convert to fraction form
    156,781.23/216,359.73 = 85,162.65/x
  3. Step 3: Cross multiply
    156,781.23x = 216,359.73 × 85,162.65
  4. Step 4: Simplify right side
    156,781.23x = 18,425,767,960.08
  5. Step 5: Solve for x
    x = 18,425,767,960.08/156,781.23
  6. Step 6: Final answer
    x = 117,525.34

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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.