Home / 109,639.95-151,301.49-61,242.56

Finding the Fourth Proportional to 109,639.95, 151,301.49 and 61,242.56

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Solution

The fourth proportional to 109,639.95, 151,301.49 and 61,242.56 is: 84,513.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,639.95 : 151,301.49 = 61,242.56 : x
  2. Step 2: Convert to fraction form
    109,639.95/151,301.49 = 61,242.56/x
  3. Step 3: Cross multiply
    109,639.95x = 151,301.49 × 61,242.56
  4. Step 4: Simplify right side
    109,639.95x = 9,266,090,251.83
  5. Step 5: Solve for x
    x = 9,266,090,251.83/109,639.95
  6. Step 6: Final answer
    x = 84,513.81

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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.