Home / 144,048.12-198,792.72-80,386.20

Finding the Fourth Proportional to 144,048.12, 198,792.72 and 80,386.20

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Solution

The fourth proportional to 144,048.12, 198,792.72 and 80,386.20 is: 110,936.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,048.12 : 198,792.72 = 80,386.20 : x
  2. Step 2: Convert to fraction form
    144,048.12/198,792.72 = 80,386.20/x
  3. Step 3: Cross multiply
    144,048.12x = 198,792.72 × 80,386.20
  4. Step 4: Simplify right side
    144,048.12x = 15,980,191,348.46
  5. Step 5: Solve for x
    x = 15,980,191,348.46/144,048.12
  6. Step 6: Final answer
    x = 110,936.48

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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.