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Finding the Fourth Proportional to 124,570.91, 171,911.87 and 70,854.55

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Solution

The fourth proportional to 124,570.91, 171,911.87 and 70,854.55 is: 97,781.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,570.91 : 171,911.87 = 70,854.55 : x
  2. Step 2: Convert to fraction form
    124,570.91/171,911.87 = 70,854.55/x
  3. Step 3: Cross multiply
    124,570.91x = 171,911.87 × 70,854.55
  4. Step 4: Simplify right side
    124,570.91x = 12,180,737,670.16
  5. Step 5: Solve for x
    x = 12,180,737,670.16/124,570.91
  6. Step 6: Final answer
    x = 97,781.56

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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.