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Finding the Fourth Proportional to 110,688.12, 152,769.12 and 65,363.16

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Solution

The fourth proportional to 110,688.12, 152,769.12 and 65,363.16 is: 90,212.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,688.12 : 152,769.12 = 65,363.16 : x
  2. Step 2: Convert to fraction form
    110,688.12/152,769.12 = 65,363.16/x
  3. Step 3: Cross multiply
    110,688.12x = 152,769.12 × 65,363.16
  4. Step 4: Simplify right side
    110,688.12x = 9,985,472,433.62
  5. Step 5: Solve for x
    x = 9,985,472,433.62/110,688.12
  6. Step 6: Final answer
    x = 90,212.68

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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.