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Finding the Fourth Proportional to 115,101.68, 172,594.68 and 67,085.74

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Solution

The fourth proportional to 115,101.68, 172,594.68 and 67,085.74 is: 100,594.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,101.68 : 172,594.68 = 67,085.74 : x
  2. Step 2: Convert to fraction form
    115,101.68/172,594.68 = 67,085.74/x
  3. Step 3: Cross multiply
    115,101.68x = 172,594.68 × 67,085.74
  4. Step 4: Simplify right side
    115,101.68x = 11,578,641,827.86
  5. Step 5: Solve for x
    x = 11,578,641,827.86/115,101.68
  6. Step 6: Final answer
    x = 100,594.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.