Home / 153,787.34-212,226.70-90,125.20

Finding the Fourth Proportional to 153,787.34, 212,226.70 and 90,125.20

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Solution

The fourth proportional to 153,787.34, 212,226.70 and 90,125.20 is: 124,372.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,787.34 : 212,226.70 = 90,125.20 : x
  2. Step 2: Convert to fraction form
    153,787.34/212,226.70 = 90,125.20/x
  3. Step 3: Cross multiply
    153,787.34x = 212,226.70 × 90,125.20
  4. Step 4: Simplify right side
    153,787.34x = 19,126,973,782.84
  5. Step 5: Solve for x
    x = 19,126,973,782.84/153,787.34
  6. Step 6: Final answer
    x = 124,372.88

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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.