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Finding the Fourth Proportional to 144,418.70, 216,447.30 and 69,518.78

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Solution

The fourth proportional to 144,418.70, 216,447.30 and 69,518.78 is: 104,191.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,418.70 : 216,447.30 = 69,518.78 : x
  2. Step 2: Convert to fraction form
    144,418.70/216,447.30 = 69,518.78/x
  3. Step 3: Cross multiply
    144,418.70x = 216,447.30 × 69,518.78
  4. Step 4: Simplify right side
    144,418.70x = 15,047,152,230.29
  5. Step 5: Solve for x
    x = 15,047,152,230.29/144,418.70
  6. Step 6: Final answer
    x = 104,191.16

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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.