Home / 134,709.28-185,895.20-74,278.90

Finding the Fourth Proportional to 134,709.28, 185,895.20 and 74,278.90

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Solution

The fourth proportional to 134,709.28, 185,895.20 and 74,278.90 is: 102,502.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,709.28 : 185,895.20 = 74,278.90 : x
  2. Step 2: Convert to fraction form
    134,709.28/185,895.20 = 74,278.90/x
  3. Step 3: Cross multiply
    134,709.28x = 185,895.20 × 74,278.90
  4. Step 4: Simplify right side
    134,709.28x = 13,808,090,971.28
  5. Step 5: Solve for x
    x = 13,808,090,971.28/134,709.28
  6. Step 6: Final answer
    x = 102,502.89

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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.