Home / 105,521.13-145,619.13-57,774.47

Finding the Fourth Proportional to 105,521.13, 145,619.13 and 57,774.47

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Solution

The fourth proportional to 105,521.13, 145,619.13 and 57,774.47 is: 79,728.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,521.13 : 145,619.13 = 57,774.47 : x
  2. Step 2: Convert to fraction form
    105,521.13/145,619.13 = 57,774.47/x
  3. Step 3: Cross multiply
    105,521.13x = 145,619.13 × 57,774.47
  4. Step 4: Simplify right side
    105,521.13x = 8,413,067,329.52
  5. Step 5: Solve for x
    x = 8,413,067,329.52/105,521.13
  6. Step 6: Final answer
    x = 79,728.75

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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.