Home / 109,643.78-151,306.77-61,246.38

Finding the Fourth Proportional to 109,643.78, 151,306.77 and 61,246.38

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Solution

The fourth proportional to 109,643.78, 151,306.77 and 61,246.38 is: 84,519.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,643.78 : 151,306.77 = 61,246.38 : x
  2. Step 2: Convert to fraction form
    109,643.78/151,306.77 = 61,246.38/x
  3. Step 3: Cross multiply
    109,643.78x = 151,306.77 × 61,246.38
  4. Step 4: Simplify right side
    109,643.78x = 9,266,991,931.99
  5. Step 5: Solve for x
    x = 9,266,991,931.99/109,643.78
  6. Step 6: Final answer
    x = 84,519.09

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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.