Home / 137,077.16-189,157.68-76,652.78

Finding the Fourth Proportional to 137,077.16, 189,157.68 and 76,652.78

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Solution

The fourth proportional to 137,077.16, 189,157.68 and 76,652.78 is: 105,775.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,077.16 : 189,157.68 = 76,652.78 : x
  2. Step 2: Convert to fraction form
    137,077.16/189,157.68 = 76,652.78/x
  3. Step 3: Cross multiply
    137,077.16x = 189,157.68 × 76,652.78
  4. Step 4: Simplify right side
    137,077.16x = 14,499,462,030.35
  5. Step 5: Solve for x
    x = 14,499,462,030.35/137,077.16
  6. Step 6: Final answer
    x = 105,775.92

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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.