Home / 74,423.24-111,153.12-67,389.20

Finding the Fourth Proportional to 74,423.24, 111,153.12 and 67,389.20

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Solution

The fourth proportional to 74,423.24, 111,153.12 and 67,389.20 is: 100,647.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,423.24 : 111,153.12 = 67,389.20 : x
  2. Step 2: Convert to fraction form
    74,423.24/111,153.12 = 67,389.20/x
  3. Step 3: Cross multiply
    74,423.24x = 111,153.12 × 67,389.20
  4. Step 4: Simplify right side
    74,423.24x = 7,490,519,834.30
  5. Step 5: Solve for x
    x = 7,490,519,834.30/74,423.24
  6. Step 6: Final answer
    x = 100,647.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.