Home / 86,916.25-130,153.84-72,839.26

Finding the Fourth Proportional to 86,916.25, 130,153.84 and 72,839.26

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Solution

The fourth proportional to 86,916.25, 130,153.84 and 72,839.26 is: 109,074.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,916.25 : 130,153.84 = 72,839.26 : x
  2. Step 2: Convert to fraction form
    86,916.25/130,153.84 = 72,839.26/x
  3. Step 3: Cross multiply
    86,916.25x = 130,153.84 × 72,839.26
  4. Step 4: Simplify right side
    86,916.25x = 9,480,309,391.76
  5. Step 5: Solve for x
    x = 9,480,309,391.76/86,916.25
  6. Step 6: Final answer
    x = 109,074.07

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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.