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Finding the Fourth Proportional to 154,242.54, 212,865.56 and 86,265.84

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Solution

The fourth proportional to 154,242.54, 212,865.56 and 86,265.84 is: 119,052.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,242.54 : 212,865.56 = 86,265.84 : x
  2. Step 2: Convert to fraction form
    154,242.54/212,865.56 = 86,265.84/x
  3. Step 3: Cross multiply
    154,242.54x = 212,865.56 × 86,265.84
  4. Step 4: Simplify right side
    154,242.54x = 18,363,026,340.47
  5. Step 5: Solve for x
    x = 18,363,026,340.47/154,242.54
  6. Step 6: Final answer
    x = 119,052.93

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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.