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Finding the Fourth Proportional to 119,871.66, 179,807.58 and 40,986.48

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Solution

The fourth proportional to 119,871.66, 179,807.58 and 40,986.48 is: 61,479.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,871.66 : 179,807.58 = 40,986.48 : x
  2. Step 2: Convert to fraction form
    119,871.66/179,807.58 = 40,986.48/x
  3. Step 3: Cross multiply
    119,871.66x = 179,807.58 × 40,986.48
  4. Step 4: Simplify right side
    119,871.66x = 7,369,679,781.52
  5. Step 5: Solve for x
    x = 7,369,679,781.52/119,871.66
  6. Step 6: Final answer
    x = 61,479.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.