Home / 105,544.11-145,649.12-57,145.65

Finding the Fourth Proportional to 105,544.11, 145,649.12 and 57,145.65

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Solution

The fourth proportional to 105,544.11, 145,649.12 and 57,145.65 is: 78,860.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,544.11 : 145,649.12 = 57,145.65 : x
  2. Step 2: Convert to fraction form
    105,544.11/145,649.12 = 57,145.65/x
  3. Step 3: Cross multiply
    105,544.11x = 145,649.12 × 57,145.65
  4. Step 4: Simplify right side
    105,544.11x = 8,323,212,802.42
  5. Step 5: Solve for x
    x = 8,323,212,802.42/105,544.11
  6. Step 6: Final answer
    x = 78,860.04

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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.