Home / 115,631.24-159,620.30-70,323.78

Finding the Fourth Proportional to 115,631.24, 159,620.30 and 70,323.78

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Solution

The fourth proportional to 115,631.24, 159,620.30 and 70,323.78 is: 97,076.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,631.24 : 159,620.30 = 70,323.78 : x
  2. Step 2: Convert to fraction form
    115,631.24/159,620.30 = 70,323.78/x
  3. Step 3: Cross multiply
    115,631.24x = 159,620.30 × 70,323.78
  4. Step 4: Simplify right side
    115,631.24x = 11,225,101,711.01
  5. Step 5: Solve for x
    x = 11,225,101,711.01/115,631.24
  6. Step 6: Final answer
    x = 97,076.72

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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.