Home / 115,341.12-159,078.60-79,522.92

Finding the Fourth Proportional to 115,341.12, 159,078.60 and 79,522.92

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Solution

The fourth proportional to 115,341.12, 159,078.60 and 79,522.92 is: 109,678.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,341.12 : 159,078.60 = 79,522.92 : x
  2. Step 2: Convert to fraction form
    115,341.12/159,078.60 = 79,522.92/x
  3. Step 3: Cross multiply
    115,341.12x = 159,078.60 × 79,522.92
  4. Step 4: Simplify right side
    115,341.12x = 12,650,394,781.51
  5. Step 5: Solve for x
    x = 12,650,394,781.51/115,341.12
  6. Step 6: Final answer
    x = 109,678.10

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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.