Home / 86,835.84-130,904.52-81,049.08

Finding the Fourth Proportional to 86,835.84, 130,904.52 and 81,049.08

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Solution

The fourth proportional to 86,835.84, 130,904.52 and 81,049.08 is: 122,181.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,835.84 : 130,904.52 = 81,049.08 : x
  2. Step 2: Convert to fraction form
    86,835.84/130,904.52 = 81,049.08/x
  3. Step 3: Cross multiply
    86,835.84x = 130,904.52 × 81,049.08
  4. Step 4: Simplify right side
    86,835.84x = 10,609,690,913.84
  5. Step 5: Solve for x
    x = 10,609,690,913.84/86,835.84
  6. Step 6: Final answer
    x = 122,181.01

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.