Home / 80,701.16-121,070.64-79,362.32

Finding the Fourth Proportional to 80,701.16, 121,070.64 and 79,362.32

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Solution

The fourth proportional to 80,701.16, 121,070.64 and 79,362.32 is: 119,062.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,701.16 : 121,070.64 = 79,362.32 : x
  2. Step 2: Convert to fraction form
    80,701.16/121,070.64 = 79,362.32/x
  3. Step 3: Cross multiply
    80,701.16x = 121,070.64 × 79,362.32
  4. Step 4: Simplify right side
    80,701.16x = 9,608,446,874.28
  5. Step 5: Solve for x
    x = 9,608,446,874.28/80,701.16
  6. Step 6: Final answer
    x = 119,062.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.