Home / 117,707.28-162,353.82-77,408.16

Finding the Fourth Proportional to 117,707.28, 162,353.82 and 77,408.16

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Solution

The fourth proportional to 117,707.28, 162,353.82 and 77,408.16 is: 106,769.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,707.28 : 162,353.82 = 77,408.16 : x
  2. Step 2: Convert to fraction form
    117,707.28/162,353.82 = 77,408.16/x
  3. Step 3: Cross multiply
    117,707.28x = 162,353.82 × 77,408.16
  4. Step 4: Simplify right side
    117,707.28x = 12,567,510,475.17
  5. Step 5: Solve for x
    x = 12,567,510,475.17/117,707.28
  6. Step 6: Final answer
    x = 106,769.19

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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.