Home / 137,586.12-189,871.02-77,170.20

Finding the Fourth Proportional to 137,586.12, 189,871.02 and 77,170.20

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Solution

The fourth proportional to 137,586.12, 189,871.02 and 77,170.20 is: 106,496.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,586.12 : 189,871.02 = 77,170.20 : x
  2. Step 2: Convert to fraction form
    137,586.12/189,871.02 = 77,170.20/x
  3. Step 3: Cross multiply
    137,586.12x = 189,871.02 × 77,170.20
  4. Step 4: Simplify right side
    137,586.12x = 14,652,384,587.60
  5. Step 5: Solve for x
    x = 14,652,384,587.60/137,586.12
  6. Step 6: Final answer
    x = 106,496.10

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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.