Home / 155,051.20-213,998.52-91,385.20

Finding the Fourth Proportional to 155,051.20, 213,998.52 and 91,385.20

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Solution

The fourth proportional to 155,051.20, 213,998.52 and 91,385.20 is: 126,128.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,051.20 : 213,998.52 = 91,385.20 : x
  2. Step 2: Convert to fraction form
    155,051.20/213,998.52 = 91,385.20/x
  3. Step 3: Cross multiply
    155,051.20x = 213,998.52 × 91,385.20
  4. Step 4: Simplify right side
    155,051.20x = 19,556,297,549.90
  5. Step 5: Solve for x
    x = 19,556,297,549.90/155,051.20
  6. Step 6: Final answer
    x = 126,128.00

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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.