Home / 154,554.15-213,357.78-103,600.17

Finding the Fourth Proportional to 154,554.15, 213,357.78 and 103,600.17

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Solution

The fourth proportional to 154,554.15, 213,357.78 and 103,600.17 is: 143,017.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,554.15 : 213,357.78 = 103,600.17 : x
  2. Step 2: Convert to fraction form
    154,554.15/213,357.78 = 103,600.17/x
  3. Step 3: Cross multiply
    154,554.15x = 213,357.78 × 103,600.17
  4. Step 4: Simplify right side
    154,554.15x = 22,103,902,278.82
  5. Step 5: Solve for x
    x = 22,103,902,278.82/154,554.15
  6. Step 6: Final answer
    x = 143,017.20

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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.