Home / 117,587.20-176,121.60-70,758.40

Finding the Fourth Proportional to 117,587.20, 176,121.60 and 70,758.40

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Solution

The fourth proportional to 117,587.20, 176,121.60 and 70,758.40 is: 105,981.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,587.20 : 176,121.60 = 70,758.40 : x
  2. Step 2: Convert to fraction form
    117,587.20/176,121.60 = 70,758.40/x
  3. Step 3: Cross multiply
    117,587.20x = 176,121.60 × 70,758.40
  4. Step 4: Simplify right side
    117,587.20x = 12,462,082,621.44
  5. Step 5: Solve for x
    x = 12,462,082,621.44/117,587.20
  6. Step 6: Final answer
    x = 105,981.63

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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.