Home / 120,554.10-180,701.55-45,645.30

Finding the Fourth Proportional to 120,554.10, 180,701.55 and 45,645.30

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Solution

The fourth proportional to 120,554.10, 180,701.55 and 45,645.30 is: 68,418.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,554.10 : 180,701.55 = 45,645.30 : x
  2. Step 2: Convert to fraction form
    120,554.10/180,701.55 = 45,645.30/x
  3. Step 3: Cross multiply
    120,554.10x = 180,701.55 × 45,645.30
  4. Step 4: Simplify right side
    120,554.10x = 8,248,176,460.22
  5. Step 5: Solve for x
    x = 8,248,176,460.22/120,554.10
  6. Step 6: Final answer
    x = 68,418.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.