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Finding the Fourth Proportional to 112,761.96, 155,600.10 and 67,430.94

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Solution

The fourth proportional to 112,761.96, 155,600.10 and 67,430.94 is: 93,047.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,761.96 : 155,600.10 = 67,430.94 : x
  2. Step 2: Convert to fraction form
    112,761.96/155,600.10 = 67,430.94/x
  3. Step 3: Cross multiply
    112,761.96x = 155,600.10 × 67,430.94
  4. Step 4: Simplify right side
    112,761.96x = 10,492,261,007.09
  5. Step 5: Solve for x
    x = 10,492,261,007.09/112,761.96
  6. Step 6: Final answer
    x = 93,047.88

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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.