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Finding the Fourth Proportional to 119,799.32, 165,302.32 and 76,816.40

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Solution

The fourth proportional to 119,799.32, 165,302.32 and 76,816.40 is: 105,993.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,799.32 : 165,302.32 = 76,816.40 : x
  2. Step 2: Convert to fraction form
    119,799.32/165,302.32 = 76,816.40/x
  3. Step 3: Cross multiply
    119,799.32x = 165,302.32 × 76,816.40
  4. Step 4: Simplify right side
    119,799.32x = 12,697,929,134.05
  5. Step 5: Solve for x
    x = 12,697,929,134.05/119,799.32
  6. Step 6: Final answer
    x = 105,993.33

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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.