Home / 113,242.96-156,005.16-79,187.76

Finding the Fourth Proportional to 113,242.96, 156,005.16 and 79,187.76

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Solution

The fourth proportional to 113,242.96, 156,005.16 and 79,187.76 is: 109,090.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,242.96 : 156,005.16 = 79,187.76 : x
  2. Step 2: Convert to fraction form
    113,242.96/156,005.16 = 79,187.76/x
  3. Step 3: Cross multiply
    113,242.96x = 156,005.16 × 79,187.76
  4. Step 4: Simplify right side
    113,242.96x = 12,353,699,168.84
  5. Step 5: Solve for x
    x = 12,353,699,168.84/113,242.96
  6. Step 6: Final answer
    x = 109,090.22

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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.