Home / 115,451.12-159,371.25-70,143.77

Finding the Fourth Proportional to 115,451.12, 159,371.25 and 70,143.77

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Solution

The fourth proportional to 115,451.12, 159,371.25 and 70,143.77 is: 96,827.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,451.12 : 159,371.25 = 70,143.77 : x
  2. Step 2: Convert to fraction form
    115,451.12/159,371.25 = 70,143.77/x
  3. Step 3: Cross multiply
    115,451.12x = 159,371.25 × 70,143.77
  4. Step 4: Simplify right side
    115,451.12x = 11,178,900,440.00
  5. Step 5: Solve for x
    x = 11,178,900,440.00/115,451.12
  6. Step 6: Final answer
    x = 96,827.99

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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.