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Finding the Fourth Proportional to 225,115.72, 310,655.86 and 124,513.64

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Solution

The fourth proportional to 225,115.72, 310,655.86 and 124,513.64 is: 171,826.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,115.72 : 310,655.86 = 124,513.64 : x
  2. Step 2: Convert to fraction form
    225,115.72/310,655.86 = 124,513.64/x
  3. Step 3: Cross multiply
    225,115.72x = 310,655.86 × 124,513.64
  4. Step 4: Simplify right side
    225,115.72x = 38,680,891,915.93
  5. Step 5: Solve for x
    x = 38,680,891,915.93/225,115.72
  6. Step 6: Final answer
    x = 171,826.70

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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.