Home / 137,012.28-189,085.78-76,585.47

Finding the Fourth Proportional to 137,012.28, 189,085.78 and 76,585.47

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Solution

The fourth proportional to 137,012.28, 189,085.78 and 76,585.47 is: 105,692.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,012.28 : 189,085.78 = 76,585.47 : x
  2. Step 2: Convert to fraction form
    137,012.28/189,085.78 = 76,585.47/x
  3. Step 3: Cross multiply
    137,012.28x = 189,085.78 × 76,585.47
  4. Step 4: Simplify right side
    137,012.28x = 14,481,223,331.62
  5. Step 5: Solve for x
    x = 14,481,223,331.62/137,012.28
  6. Step 6: Final answer
    x = 105,692.89

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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.