Home / 96,990.66-145,282.95-78,164.10

Finding the Fourth Proportional to 96,990.66, 145,282.95 and 78,164.10

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Solution

The fourth proportional to 96,990.66, 145,282.95 and 78,164.10 is: 117,082.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,990.66 : 145,282.95 = 78,164.10 : x
  2. Step 2: Convert to fraction form
    96,990.66/145,282.95 = 78,164.10/x
  3. Step 3: Cross multiply
    96,990.66x = 145,282.95 × 78,164.10
  4. Step 4: Simplify right side
    96,990.66x = 11,355,911,032.10
  5. Step 5: Solve for x
    x = 11,355,911,032.10/96,990.66
  6. Step 6: Final answer
    x = 117,082.52

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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.