Home / 99,147.16-136,845.66-56,729.08

Finding the Fourth Proportional to 99,147.16, 136,845.66 and 56,729.08

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Solution

The fourth proportional to 99,147.16, 136,845.66 and 56,729.08 is: 78,299.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,147.16 : 136,845.66 = 56,729.08 : x
  2. Step 2: Convert to fraction form
    99,147.16/136,845.66 = 56,729.08/x
  3. Step 3: Cross multiply
    99,147.16x = 136,845.66 × 56,729.08
  4. Step 4: Simplify right side
    99,147.16x = 7,763,128,393.79
  5. Step 5: Solve for x
    x = 7,763,128,393.79/99,147.16
  6. Step 6: Final answer
    x = 78,299.05

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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.