Home / 105,238.50-145,239.12-57,499.04

Finding the Fourth Proportional to 105,238.50, 145,239.12 and 57,499.04

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Solution

The fourth proportional to 105,238.50, 145,239.12 and 57,499.04 is: 79,354.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,238.50 : 145,239.12 = 57,499.04 : x
  2. Step 2: Convert to fraction form
    105,238.50/145,239.12 = 57,499.04/x
  3. Step 3: Cross multiply
    105,238.50x = 145,239.12 × 57,499.04
  4. Step 4: Simplify right side
    105,238.50x = 8,351,109,244.25
  5. Step 5: Solve for x
    x = 8,351,109,244.25/105,238.50
  6. Step 6: Final answer
    x = 79,354.13

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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.