Home / 113,819.20-157,049.76-97,878.40

Finding the Fourth Proportional to 113,819.20, 157,049.76 and 97,878.40

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Solution

The fourth proportional to 113,819.20, 157,049.76 and 97,878.40 is: 135,054.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,819.20 : 157,049.76 = 97,878.40 : x
  2. Step 2: Convert to fraction form
    113,819.20/157,049.76 = 97,878.40/x
  3. Step 3: Cross multiply
    113,819.20x = 157,049.76 × 97,878.40
  4. Step 4: Simplify right side
    113,819.20x = 15,371,779,229.18
  5. Step 5: Solve for x
    x = 15,371,779,229.18/113,819.20
  6. Step 6: Final answer
    x = 135,054.36

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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.