Home / 96,451.32-133,137.75-78,515.19

Finding the Fourth Proportional to 96,451.32, 133,137.75 and 78,515.19

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Solution

The fourth proportional to 96,451.32, 133,137.75 and 78,515.19 is: 108,379.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,451.32 : 133,137.75 = 78,515.19 : x
  2. Step 2: Convert to fraction form
    96,451.32/133,137.75 = 78,515.19/x
  3. Step 3: Cross multiply
    96,451.32x = 133,137.75 × 78,515.19
  4. Step 4: Simplify right side
    96,451.32x = 10,453,335,737.42
  5. Step 5: Solve for x
    x = 10,453,335,737.42/96,451.32
  6. Step 6: Final answer
    x = 108,379.40

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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.