Home / 100,928.32-139,260-58,484.32

Finding the Fourth Proportional to 100,928.32, 139,260 and 58,484.32

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Solution

The fourth proportional to 100,928.32, 139,260 and 58,484.32 is: 80,696.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,928.32 : 139,260 = 58,484.32 : x
  2. Step 2: Convert to fraction form
    100,928.32/139,260 = 58,484.32/x
  3. Step 3: Cross multiply
    100,928.32x = 139,260 × 58,484.32
  4. Step 4: Simplify right side
    100,928.32x = 8,144,526,403.20
  5. Step 5: Solve for x
    x = 8,144,526,403.20/100,928.32
  6. Step 6: Final answer
    x = 80,696.15

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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.