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Finding the Fourth Proportional to 131,495.64, 181,419.66 and 74,866.92

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Solution

The fourth proportional to 131,495.64, 181,419.66 and 74,866.92 is: 103,291.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,495.64 : 181,419.66 = 74,866.92 : x
  2. Step 2: Convert to fraction form
    131,495.64/181,419.66 = 74,866.92/x
  3. Step 3: Cross multiply
    131,495.64x = 181,419.66 × 74,866.92
  4. Step 4: Simplify right side
    131,495.64x = 13,582,331,171.65
  5. Step 5: Solve for x
    x = 13,582,331,171.65/131,495.64
  6. Step 6: Final answer
    x = 103,291.11

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1.5x scale

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.