Home / 86,585.10-130,072.05-83,280.30

Finding the Fourth Proportional to 86,585.10, 130,072.05 and 83,280.30

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Solution

The fourth proportional to 86,585.10, 130,072.05 and 83,280.30 is: 125,107.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,585.10 : 130,072.05 = 83,280.30 : x
  2. Step 2: Convert to fraction form
    86,585.10/130,072.05 = 83,280.30/x
  3. Step 3: Cross multiply
    86,585.10x = 130,072.05 × 83,280.30
  4. Step 4: Simplify right side
    86,585.10x = 10,832,439,345.62
  5. Step 5: Solve for x
    x = 10,832,439,345.62/86,585.10
  6. Step 6: Final answer
    x = 125,107.43

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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.