Home / 137,291.02-189,439.64-76,864.20

Finding the Fourth Proportional to 137,291.02, 189,439.64 and 76,864.20

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Solution

The fourth proportional to 137,291.02, 189,439.64 and 76,864.20 is: 106,060.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,291.02 : 189,439.64 = 76,864.20 : x
  2. Step 2: Convert to fraction form
    137,291.02/189,439.64 = 76,864.20/x
  3. Step 3: Cross multiply
    137,291.02x = 189,439.64 × 76,864.20
  4. Step 4: Simplify right side
    137,291.02x = 14,561,126,376.89
  5. Step 5: Solve for x
    x = 14,561,126,376.89/137,291.02
  6. Step 6: Final answer
    x = 106,060.30

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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.