Home / 144,018.28-198,780.80-87,477.04

Finding the Fourth Proportional to 144,018.28, 198,780.80 and 87,477.04

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Solution

The fourth proportional to 144,018.28, 198,780.80 and 87,477.04 is: 120,739.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,018.28 : 198,780.80 = 87,477.04 : x
  2. Step 2: Convert to fraction form
    144,018.28/198,780.80 = 87,477.04/x
  3. Step 3: Cross multiply
    144,018.28x = 198,780.80 × 87,477.04
  4. Step 4: Simplify right side
    144,018.28x = 17,388,755,992.83
  5. Step 5: Solve for x
    x = 17,388,755,992.83/144,018.28
  6. Step 6: Final answer
    x = 120,739.92

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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.