Home / 86,915.33-130,197.69-72,835.83

Finding the Fourth Proportional to 86,915.33, 130,197.69 and 72,835.83

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Solution

The fourth proportional to 86,915.33, 130,197.69 and 72,835.83 is: 109,106.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,915.33 : 130,197.69 = 72,835.83 : x
  2. Step 2: Convert to fraction form
    86,915.33/130,197.69 = 72,835.83/x
  3. Step 3: Cross multiply
    86,915.33x = 130,197.69 × 72,835.83
  4. Step 4: Simplify right side
    86,915.33x = 9,483,057,283.84
  5. Step 5: Solve for x
    x = 9,483,057,283.84/86,915.33
  6. Step 6: Final answer
    x = 109,106.84

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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.