Home / 98,081.19-147,120.75-31,521.38

Finding the Fourth Proportional to 98,081.19, 147,120.75 and 31,521.38

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Solution

The fourth proportional to 98,081.19, 147,120.75 and 31,521.38 is: 47,281.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,081.19 : 147,120.75 = 31,521.38 : x
  2. Step 2: Convert to fraction form
    98,081.19/147,120.75 = 31,521.38/x
  3. Step 3: Cross multiply
    98,081.19x = 147,120.75 × 31,521.38
  4. Step 4: Simplify right side
    98,081.19x = 4,637,448,331.03
  5. Step 5: Solve for x
    x = 4,637,448,331.03/98,081.19
  6. Step 6: Final answer
    x = 47,281.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.