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Finding the Fourth Proportional to 115,475.68, 159,347.32 and 64,484.40

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Solution

The fourth proportional to 115,475.68, 159,347.32 and 64,484.40 is: 88,983.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,475.68 : 159,347.32 = 64,484.40 : x
  2. Step 2: Convert to fraction form
    115,475.68/159,347.32 = 64,484.40/x
  3. Step 3: Cross multiply
    115,475.68x = 159,347.32 × 64,484.40
  4. Step 4: Simplify right side
    115,475.68x = 10,275,416,321.81
  5. Step 5: Solve for x
    x = 10,275,416,321.81/115,475.68
  6. Step 6: Final answer
    x = 88,983.38

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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.