Home / 137,674.08-189,967.68-81,077.76

Finding the Fourth Proportional to 137,674.08, 189,967.68 and 81,077.76

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Solution

The fourth proportional to 137,674.08, 189,967.68 and 81,077.76 is: 111,874.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,674.08 : 189,967.68 = 81,077.76 : x
  2. Step 2: Convert to fraction form
    137,674.08/189,967.68 = 81,077.76/x
  3. Step 3: Cross multiply
    137,674.08x = 189,967.68 × 81,077.76
  4. Step 4: Simplify right side
    137,674.08x = 15,402,153,966.80
  5. Step 5: Solve for x
    x = 15,402,153,966.80/137,674.08
  6. Step 6: Final answer
    x = 111,874.03

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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.