Home / 105,169.91-145,140.36-57,427.70

Finding the Fourth Proportional to 105,169.91, 145,140.36 and 57,427.70

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Solution

The fourth proportional to 105,169.91, 145,140.36 and 57,427.70 is: 79,253.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,169.91 : 145,140.36 = 57,427.70 : x
  2. Step 2: Convert to fraction form
    105,169.91/145,140.36 = 57,427.70/x
  3. Step 3: Cross multiply
    105,169.91x = 145,140.36 × 57,427.70
  4. Step 4: Simplify right side
    105,169.91x = 8,335,077,051.97
  5. Step 5: Solve for x
    x = 8,335,077,051.97/105,169.91
  6. Step 6: Final answer
    x = 79,253.44

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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.