Home / 156,053.39-215,292.40-90,631.08

Finding the Fourth Proportional to 156,053.39, 215,292.40 and 90,631.08

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Solution

The fourth proportional to 156,053.39, 215,292.40 and 90,631.08 is: 125,035.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,053.39 : 215,292.40 = 90,631.08 : x
  2. Step 2: Convert to fraction form
    156,053.39/215,292.40 = 90,631.08/x
  3. Step 3: Cross multiply
    156,053.39x = 215,292.40 × 90,631.08
  4. Step 4: Simplify right side
    156,053.39x = 19,512,181,198.17
  5. Step 5: Solve for x
    x = 19,512,181,198.17/156,053.39
  6. Step 6: Final answer
    x = 125,035.30

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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.