Home / 156,121.71-215,447.79-84,501.62

Finding the Fourth Proportional to 156,121.71, 215,447.79 and 84,501.62

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Solution

The fourth proportional to 156,121.71, 215,447.79 and 84,501.62 is: 116,612.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,121.71 : 215,447.79 = 84,501.62 : x
  2. Step 2: Convert to fraction form
    156,121.71/215,447.79 = 84,501.62/x
  3. Step 3: Cross multiply
    156,121.71x = 215,447.79 × 84,501.62
  4. Step 4: Simplify right side
    156,121.71x = 18,205,686,203.18
  5. Step 5: Solve for x
    x = 18,205,686,203.18/156,121.71
  6. Step 6: Final answer
    x = 116,612.14

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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.