Home / 115,171.34-158,875.70-79,299.07

Finding the Fourth Proportional to 115,171.34, 158,875.70 and 79,299.07

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Solution

The fourth proportional to 115,171.34, 158,875.70 and 79,299.07 is: 109,390.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,171.34 : 158,875.70 = 79,299.07 : x
  2. Step 2: Convert to fraction form
    115,171.34/158,875.70 = 79,299.07/x
  3. Step 3: Cross multiply
    115,171.34x = 158,875.70 × 79,299.07
  4. Step 4: Simplify right side
    115,171.34x = 12,598,694,461.91
  5. Step 5: Solve for x
    x = 12,598,694,461.91/115,171.34
  6. Step 6: Final answer
    x = 109,390.89

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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.