Home / 105,318.56-145,339.62-57,572.25

Finding the Fourth Proportional to 105,318.56, 145,339.62 and 57,572.25

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Solution

The fourth proportional to 105,318.56, 145,339.62 and 57,572.25 is: 79,449.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,318.56 : 145,339.62 = 57,572.25 : x
  2. Step 2: Convert to fraction form
    105,318.56/145,339.62 = 57,572.25/x
  3. Step 3: Cross multiply
    105,318.56x = 145,339.62 × 57,572.25
  4. Step 4: Simplify right side
    105,318.56x = 8,367,528,994.16
  5. Step 5: Solve for x
    x = 8,367,528,994.16/105,318.56
  6. Step 6: Final answer
    x = 79,449.71

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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.