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Finding the Fourth Proportional to 115,575.81, 159,497.78 and 65,274.81

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Solution

The fourth proportional to 115,575.81, 159,497.78 and 65,274.81 is: 90,081.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,575.81 : 159,497.78 = 65,274.81 : x
  2. Step 2: Convert to fraction form
    115,575.81/159,497.78 = 65,274.81/x
  3. Step 3: Cross multiply
    115,575.81x = 159,497.78 × 65,274.81
  4. Step 4: Simplify right side
    115,575.81x = 10,411,186,958.55
  5. Step 5: Solve for x
    x = 10,411,186,958.55/115,575.81
  6. Step 6: Final answer
    x = 90,081.02

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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.