Home / 113,520.72-156,734.09-70,564.40

Finding the Fourth Proportional to 113,520.72, 156,734.09 and 70,564.40

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Solution

The fourth proportional to 113,520.72, 156,734.09 and 70,564.40 is: 97,425.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,520.72 : 156,734.09 = 70,564.40 : x
  2. Step 2: Convert to fraction form
    113,520.72/156,734.09 = 70,564.40/x
  3. Step 3: Cross multiply
    113,520.72x = 156,734.09 × 70,564.40
  4. Step 4: Simplify right side
    113,520.72x = 11,059,845,883.90
  5. Step 5: Solve for x
    x = 11,059,845,883.90/113,520.72
  6. Step 6: Final answer
    x = 97,425.79

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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.