Home / 86,916.33-130,199.19-72,836.83

Finding the Fourth Proportional to 86,916.33, 130,199.19 and 72,836.83

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Solution

The fourth proportional to 86,916.33, 130,199.19 and 72,836.83 is: 109,108.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,916.33 : 130,199.19 = 72,836.83 : x
  2. Step 2: Convert to fraction form
    86,916.33/130,199.19 = 72,836.83/x
  3. Step 3: Cross multiply
    86,916.33x = 130,199.19 × 72,836.83
  4. Step 4: Simplify right side
    86,916.33x = 9,483,296,268.17
  5. Step 5: Solve for x
    x = 9,483,296,268.17/86,916.33
  6. Step 6: Final answer
    x = 109,108.34

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1.5x scale

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.