Home / 145,848.20-218,772.30-123,978.20

Finding the Fourth Proportional to 145,848.20, 218,772.30 and 123,978.20

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Solution

The fourth proportional to 145,848.20, 218,772.30 and 123,978.20 is: 185,967.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,848.20 : 218,772.30 = 123,978.20 : x
  2. Step 2: Convert to fraction form
    145,848.20/218,772.30 = 123,978.20/x
  3. Step 3: Cross multiply
    145,848.20x = 218,772.30 × 123,978.20
  4. Step 4: Simplify right side
    145,848.20x = 27,122,995,963.86
  5. Step 5: Solve for x
    x = 27,122,995,963.86/145,848.20
  6. Step 6: Final answer
    x = 185,967.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.