Home / 209,815.60-314,754.68-74,869.16

Finding the Fourth Proportional to 209,815.60, 314,754.68 and 74,869.16

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Solution

The fourth proportional to 209,815.60, 314,754.68 and 74,869.16 is: 112,314.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,815.60 : 314,754.68 = 74,869.16 : x
  2. Step 2: Convert to fraction form
    209,815.60/314,754.68 = 74,869.16/x
  3. Step 3: Cross multiply
    209,815.60x = 314,754.68 × 74,869.16
  4. Step 4: Simplify right side
    209,815.60x = 23,565,418,497.67
  5. Step 5: Solve for x
    x = 23,565,418,497.67/209,815.60
  6. Step 6: Final answer
    x = 112,314.90

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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.