Home / 154,068.98-212,616.60-90,407.84

Finding the Fourth Proportional to 154,068.98, 212,616.60 and 90,407.84

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Solution

The fourth proportional to 154,068.98, 212,616.60 and 90,407.84 is: 124,763.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,068.98 : 212,616.60 = 90,407.84 : x
  2. Step 2: Convert to fraction form
    154,068.98/212,616.60 = 90,407.84/x
  3. Step 3: Cross multiply
    154,068.98x = 212,616.60 × 90,407.84
  4. Step 4: Simplify right side
    154,068.98x = 19,222,207,554.14
  5. Step 5: Solve for x
    x = 19,222,207,554.14/154,068.98
  6. Step 6: Final answer
    x = 124,763.65

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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.