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Finding the Fourth Proportional to 92,285.90, 127,079.78 and 85,587.66

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Solution

The fourth proportional to 92,285.90, 127,079.78 and 85,587.66 is: 117,856.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,285.90 : 127,079.78 = 85,587.66 : x
  2. Step 2: Convert to fraction form
    92,285.90/127,079.78 = 85,587.66/x
  3. Step 3: Cross multiply
    92,285.90x = 127,079.78 × 85,587.66
  4. Step 4: Simplify right side
    92,285.90x = 10,876,461,003.51
  5. Step 5: Solve for x
    x = 10,876,461,003.51/92,285.90
  6. Step 6: Final answer
    x = 117,856.15

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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.