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Finding the Fourth Proportional to 115,339.66, 159,160.08 and 75,130.46

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Solution

The fourth proportional to 115,339.66, 159,160.08 and 75,130.46 is: 103,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,339.66 : 159,160.08 = 75,130.46 : x
  2. Step 2: Convert to fraction form
    115,339.66/159,160.08 = 75,130.46/x
  3. Step 3: Cross multiply
    115,339.66x = 159,160.08 × 75,130.46
  4. Step 4: Simplify right side
    115,339.66x = 11,957,770,024.04
  5. Step 5: Solve for x
    x = 11,957,770,024.04/115,339.66
  6. Step 6: Final answer
    x = 103,674.40

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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.