Home / 131,139.96-180,971.28-73,774.92

Finding the Fourth Proportional to 131,139.96, 180,971.28 and 73,774.92

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Solution

The fourth proportional to 131,139.96, 180,971.28 and 73,774.92 is: 101,808.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,139.96 : 180,971.28 = 73,774.92 : x
  2. Step 2: Convert to fraction form
    131,139.96/180,971.28 = 73,774.92/x
  3. Step 3: Cross multiply
    131,139.96x = 180,971.28 × 73,774.92
  4. Step 4: Simplify right side
    131,139.96x = 13,351,141,704.30
  5. Step 5: Solve for x
    x = 13,351,141,704.30/131,139.96
  6. Step 6: Final answer
    x = 101,808.34

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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.