Home / 86,841.10-130,282.13-69,138.69

Finding the Fourth Proportional to 86,841.10, 130,282.13 and 69,138.69

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Solution

The fourth proportional to 86,841.10, 130,282.13 and 69,138.69 is: 103,724.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,841.10 : 130,282.13 = 69,138.69 : x
  2. Step 2: Convert to fraction form
    86,841.10/130,282.13 = 69,138.69/x
  3. Step 3: Cross multiply
    86,841.10x = 130,282.13 × 69,138.69
  4. Step 4: Simplify right side
    86,841.10x = 9,007,535,798.61
  5. Step 5: Solve for x
    x = 9,007,535,798.61/86,841.10
  6. Step 6: Final answer
    x = 103,724.34

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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.