Home / 105,065.04-144,987.20-57,318.72

Finding the Fourth Proportional to 105,065.04, 144,987.20 and 57,318.72

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Solution

The fourth proportional to 105,065.04, 144,987.20 and 57,318.72 is: 79,098.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,065.04 : 144,987.20 = 57,318.72 : x
  2. Step 2: Convert to fraction form
    105,065.04/144,987.20 = 57,318.72/x
  3. Step 3: Cross multiply
    105,065.04x = 144,987.20 × 57,318.72
  4. Step 4: Simplify right side
    105,065.04x = 8,310,480,720.38
  5. Step 5: Solve for x
    x = 8,310,480,720.38/105,065.04
  6. Step 6: Final answer
    x = 79,098.44

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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.