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Finding the Fourth Proportional to 99,812.55, 137,697.12 and 67,535.67

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Solution

The fourth proportional to 99,812.55, 137,697.12 and 67,535.67 is: 93,169.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,812.55 : 137,697.12 = 67,535.67 : x
  2. Step 2: Convert to fraction form
    99,812.55/137,697.12 = 67,535.67/x
  3. Step 3: Cross multiply
    99,812.55x = 137,697.12 × 67,535.67
  4. Step 4: Simplify right side
    99,812.55x = 9,299,467,256.27
  5. Step 5: Solve for x
    x = 9,299,467,256.27/99,812.55
  6. Step 6: Final answer
    x = 93,169.32

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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.