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Finding the Fourth Proportional to 124,561.76, 171,898.86 and 67,976.78

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Solution

The fourth proportional to 124,561.76, 171,898.86 and 67,976.78 is: 93,809.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,561.76 : 171,898.86 = 67,976.78 : x
  2. Step 2: Convert to fraction form
    124,561.76/171,898.86 = 67,976.78/x
  3. Step 3: Cross multiply
    124,561.76x = 171,898.86 × 67,976.78
  4. Step 4: Simplify right side
    124,561.76x = 11,685,130,988.47
  5. Step 5: Solve for x
    x = 11,685,130,988.47/124,561.76
  6. Step 6: Final answer
    x = 93,809.94

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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.