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Finding the Fourth Proportional to 154,152.78, 212,765.16 and 93,710.63

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Solution

The fourth proportional to 154,152.78, 212,765.16 and 93,710.63 is: 129,341.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,152.78 : 212,765.16 = 93,710.63 : x
  2. Step 2: Convert to fraction form
    154,152.78/212,765.16 = 93,710.63/x
  3. Step 3: Cross multiply
    154,152.78x = 212,765.16 × 93,710.63
  4. Step 4: Simplify right side
    154,152.78x = 19,938,356,121.83
  5. Step 5: Solve for x
    x = 19,938,356,121.83/154,152.78
  6. Step 6: Final answer
    x = 129,341.53

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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.