Home / 113,294.12-156,378.75-70,286.72

Finding the Fourth Proportional to 113,294.12, 156,378.75 and 70,286.72

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Solution

The fourth proportional to 113,294.12, 156,378.75 and 70,286.72 is: 97,016.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,294.12 : 156,378.75 = 70,286.72 : x
  2. Step 2: Convert to fraction form
    113,294.12/156,378.75 = 70,286.72/x
  3. Step 3: Cross multiply
    113,294.12x = 156,378.75 × 70,286.72
  4. Step 4: Simplify right side
    113,294.12x = 10,991,349,415.20
  5. Step 5: Solve for x
    x = 10,991,349,415.20/113,294.12
  6. Step 6: Final answer
    x = 97,016.06

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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.