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Finding the Fourth Proportional to 154,040.88, 212,577.88 and 90,379.76

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Solution

The fourth proportional to 154,040.88, 212,577.88 and 90,379.76 is: 124,724.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,040.88 : 212,577.88 = 90,379.76 : x
  2. Step 2: Convert to fraction form
    154,040.88/212,577.88 = 90,379.76/x
  3. Step 3: Cross multiply
    154,040.88x = 212,577.88 × 90,379.76
  4. Step 4: Simplify right side
    154,040.88x = 19,212,737,775.71
  5. Step 5: Solve for x
    x = 19,212,737,775.71/154,040.88
  6. Step 6: Final answer
    x = 124,724.93

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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.