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Finding the Fourth Proportional to 99,751.50, 137,657.07 and 67,975.76

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Solution

The fourth proportional to 99,751.50, 137,657.07 and 67,975.76 is: 93,806.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,751.50 : 137,657.07 = 67,975.76 : x
  2. Step 2: Convert to fraction form
    99,751.50/137,657.07 = 67,975.76/x
  3. Step 3: Cross multiply
    99,751.50x = 137,657.07 × 67,975.76
  4. Step 4: Simplify right side
    99,751.50x = 9,357,343,522.44
  5. Step 5: Solve for x
    x = 9,357,343,522.44/99,751.50
  6. Step 6: Final answer
    x = 93,806.54

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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.