Home / 98,843.46-148,987.01-90,428.37

Finding the Fourth Proportional to 98,843.46, 148,987.01 and 90,428.37

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Solution

The fourth proportional to 98,843.46, 148,987.01 and 90,428.37 is: 136,302.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,843.46 : 148,987.01 = 90,428.37 : x
  2. Step 2: Convert to fraction form
    98,843.46/148,987.01 = 90,428.37/x
  3. Step 3: Cross multiply
    98,843.46x = 148,987.01 × 90,428.37
  4. Step 4: Simplify right side
    98,843.46x = 13,472,652,013.33
  5. Step 5: Solve for x
    x = 13,472,652,013.33/98,843.46
  6. Step 6: Final answer
    x = 136,302.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.