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Finding the Fourth Proportional to 115,469.66, 159,339.04 and 64,478.40

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Solution

The fourth proportional to 115,469.66, 159,339.04 and 64,478.40 is: 88,975.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,469.66 : 159,339.04 = 64,478.40 : x
  2. Step 2: Convert to fraction form
    115,469.66/159,339.04 = 64,478.40/x
  3. Step 3: Cross multiply
    115,469.66x = 159,339.04 × 64,478.40
  4. Step 4: Simplify right side
    115,469.66x = 10,273,926,356.74
  5. Step 5: Solve for x
    x = 10,273,926,356.74/115,469.66
  6. Step 6: Final answer
    x = 88,975.12

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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.