Home / 154,359.18-213,048.77-100,548.18

Finding the Fourth Proportional to 154,359.18, 213,048.77 and 100,548.18

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Solution

The fourth proportional to 154,359.18, 213,048.77 and 100,548.18 is: 138,778.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,359.18 : 213,048.77 = 100,548.18 : x
  2. Step 2: Convert to fraction form
    154,359.18/213,048.77 = 100,548.18/x
  3. Step 3: Cross multiply
    154,359.18x = 213,048.77 × 100,548.18
  4. Step 4: Simplify right side
    154,359.18x = 21,421,665,572.00
  5. Step 5: Solve for x
    x = 21,421,665,572.00/154,359.18
  6. Step 6: Final answer
    x = 138,778.05

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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.