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Finding the Fourth Proportional to 115,598.97, 159,456.47 and 79,725.69

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Solution

The fourth proportional to 115,598.97, 159,456.47 and 79,725.69 is: 109,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,598.97 : 159,456.47 = 79,725.69 : x
  2. Step 2: Convert to fraction form
    115,598.97/159,456.47 = 79,725.69/x
  3. Step 3: Cross multiply
    115,598.97x = 159,456.47 × 79,725.69
  4. Step 4: Simplify right side
    115,598.97x = 12,712,776,697.09
  5. Step 5: Solve for x
    x = 12,712,776,697.09/115,598.97
  6. Step 6: Final answer
    x = 109,973.10

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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.