Home / 209,815.32-314,854.16-85,156.32

Finding the Fourth Proportional to 209,815.32, 314,854.16 and 85,156.32

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Solution

The fourth proportional to 209,815.32, 314,854.16 and 85,156.32 is: 127,787.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,815.32 : 314,854.16 = 85,156.32 : x
  2. Step 2: Convert to fraction form
    209,815.32/314,854.16 = 85,156.32/x
  3. Step 3: Cross multiply
    209,815.32x = 314,854.16 × 85,156.32
  4. Step 4: Simplify right side
    209,815.32x = 26,811,821,602.29
  5. Step 5: Solve for x
    x = 26,811,821,602.29/209,815.32
  6. Step 6: Final answer
    x = 127,787.72

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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.