Home / 98,005.45-147,082.16-71,778.19

Finding the Fourth Proportional to 98,005.45, 147,082.16 and 71,778.19

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Solution

The fourth proportional to 98,005.45, 147,082.16 and 71,778.19 is: 107,721.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,005.45 : 147,082.16 = 71,778.19 : x
  2. Step 2: Convert to fraction form
    98,005.45/147,082.16 = 71,778.19/x
  3. Step 3: Cross multiply
    98,005.45x = 147,082.16 × 71,778.19
  4. Step 4: Simplify right side
    98,005.45x = 10,557,291,226.09
  5. Step 5: Solve for x
    x = 10,557,291,226.09/98,005.45
  6. Step 6: Final answer
    x = 107,721.47

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1.5x scale

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.