Home / 131,016.40-180,801.74-74,427.76

Finding the Fourth Proportional to 131,016.40, 180,801.74 and 74,427.76

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Solution

The fourth proportional to 131,016.40, 180,801.74 and 74,427.76 is: 102,709.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,016.40 : 180,801.74 = 74,427.76 : x
  2. Step 2: Convert to fraction form
    131,016.40/180,801.74 = 74,427.76/x
  3. Step 3: Cross multiply
    131,016.40x = 180,801.74 × 74,427.76
  4. Step 4: Simplify right side
    131,016.40x = 13,456,668,140.16
  5. Step 5: Solve for x
    x = 13,456,668,140.16/131,016.40
  6. Step 6: Final answer
    x = 102,709.80

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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.