Home / 103,120.32-142,301.28-58,408.64

Finding the Fourth Proportional to 103,120.32, 142,301.28 and 58,408.64

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Solution

The fourth proportional to 103,120.32, 142,301.28 and 58,408.64 is: 80,601.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,120.32 : 142,301.28 = 58,408.64 : x
  2. Step 2: Convert to fraction form
    103,120.32/142,301.28 = 58,408.64/x
  3. Step 3: Cross multiply
    103,120.32x = 142,301.28 × 58,408.64
  4. Step 4: Simplify right side
    103,120.32x = 8,311,624,235.06
  5. Step 5: Solve for x
    x = 8,311,624,235.06/103,120.32
  6. Step 6: Final answer
    x = 80,601.23

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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.