Home / 86,842.10-130,283.63-69,139.69

Finding the Fourth Proportional to 86,842.10, 130,283.63 and 69,139.69

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Solution

The fourth proportional to 86,842.10, 130,283.63 and 69,139.69 is: 103,725.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,842.10 : 130,283.63 = 69,139.69 : x
  2. Step 2: Convert to fraction form
    86,842.10/130,283.63 = 69,139.69/x
  3. Step 3: Cross multiply
    86,842.10x = 130,283.63 × 69,139.69
  4. Step 4: Simplify right side
    86,842.10x = 9,007,769,790.27
  5. Step 5: Solve for x
    x = 9,007,769,790.27/86,842.10
  6. Step 6: Final answer
    x = 103,725.84

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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.