Home / 115,715.70-159,617.83-76,424.92

Finding the Fourth Proportional to 115,715.70, 159,617.83 and 76,424.92

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Solution

The fourth proportional to 115,715.70, 159,617.83 and 76,424.92 is: 105,420.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,715.70 : 159,617.83 = 76,424.92 : x
  2. Step 2: Convert to fraction form
    115,715.70/159,617.83 = 76,424.92/x
  3. Step 3: Cross multiply
    115,715.70x = 159,617.83 × 76,424.92
  4. Step 4: Simplify right side
    115,715.70x = 12,198,779,281.30
  5. Step 5: Solve for x
    x = 12,198,779,281.30/115,715.70
  6. Step 6: Final answer
    x = 105,420.27

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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.