Home / 113,042.30-156,005.75-65,297.66

Finding the Fourth Proportional to 113,042.30, 156,005.75 and 65,297.66

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Solution

The fourth proportional to 113,042.30, 156,005.75 and 65,297.66 is: 90,115.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,042.30 : 156,005.75 = 65,297.66 : x
  2. Step 2: Convert to fraction form
    113,042.30/156,005.75 = 65,297.66/x
  3. Step 3: Cross multiply
    113,042.30x = 156,005.75 × 65,297.66
  4. Step 4: Simplify right side
    113,042.30x = 10,186,810,421.55
  5. Step 5: Solve for x
    x = 10,186,810,421.55/113,042.30
  6. Step 6: Final answer
    x = 90,115.03

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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.