Home / 115,521.12-159,429.87-70,188.66

Finding the Fourth Proportional to 115,521.12, 159,429.87 and 70,188.66

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Solution

The fourth proportional to 115,521.12, 159,429.87 and 70,188.66 is: 96,866.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,521.12 : 159,429.87 = 70,188.66 : x
  2. Step 2: Convert to fraction form
    115,521.12/159,429.87 = 70,188.66/x
  3. Step 3: Cross multiply
    115,521.12x = 159,429.87 × 70,188.66
  4. Step 4: Simplify right side
    115,521.12x = 11,190,168,939.27
  5. Step 5: Solve for x
    x = 11,190,168,939.27/115,521.12
  6. Step 6: Final answer
    x = 96,866.87

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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.