Home / 117,639.20-176,458.80-80,314.40

Finding the Fourth Proportional to 117,639.20, 176,458.80 and 80,314.40

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Solution

The fourth proportional to 117,639.20, 176,458.80 and 80,314.40 is: 120,471.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,639.20 : 176,458.80 = 80,314.40 : x
  2. Step 2: Convert to fraction form
    117,639.20/176,458.80 = 80,314.40/x
  3. Step 3: Cross multiply
    117,639.20x = 176,458.80 × 80,314.40
  4. Step 4: Simplify right side
    117,639.20x = 14,172,182,646.72
  5. Step 5: Solve for x
    x = 14,172,182,646.72/117,639.20
  6. Step 6: Final answer
    x = 120,471.60

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1.5x scale

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.