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Finding the Fourth Proportional to 145,593.72, 200,991.69 and 112,814.55

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Solution

The fourth proportional to 145,593.72, 200,991.69 and 112,814.55 is: 155,740.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,593.72 : 200,991.69 = 112,814.55 : x
  2. Step 2: Convert to fraction form
    145,593.72/200,991.69 = 112,814.55/x
  3. Step 3: Cross multiply
    145,593.72x = 200,991.69 × 112,814.55
  4. Step 4: Simplify right side
    145,593.72x = 22,674,787,061.09
  5. Step 5: Solve for x
    x = 22,674,787,061.09/145,593.72
  6. Step 6: Final answer
    x = 155,740.14

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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.