Home / 113,605.04-156,651.90-77,330

Finding the Fourth Proportional to 113,605.04, 156,651.90 and 77,330

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Solution

The fourth proportional to 113,605.04, 156,651.90 and 77,330 is: 106,631.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,605.04 : 156,651.90 = 77,330 : x
  2. Step 2: Convert to fraction form
    113,605.04/156,651.90 = 77,330/x
  3. Step 3: Cross multiply
    113,605.04x = 156,651.90 × 77,330
  4. Step 4: Simplify right side
    113,605.04x = 12,113,891,427
  5. Step 5: Solve for x
    x = 12,113,891,427/113,605.04
  6. Step 6: Final answer
    x = 106,631.64

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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.