Home / 189,490.14-261,492.16-103,445.78

Finding the Fourth Proportional to 189,490.14, 261,492.16 and 103,445.78

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Solution

The fourth proportional to 189,490.14, 261,492.16 and 103,445.78 is: 142,752.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,490.14 : 261,492.16 = 103,445.78 : x
  2. Step 2: Convert to fraction form
    189,490.14/261,492.16 = 103,445.78/x
  3. Step 3: Cross multiply
    189,490.14x = 261,492.16 × 103,445.78
  4. Step 4: Simplify right side
    189,490.14x = 27,050,261,107.47
  5. Step 5: Solve for x
    x = 27,050,261,107.47/189,490.14
  6. Step 6: Final answer
    x = 142,752.87

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1.5x scale

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.