Home / 86,426.45-129,438.25-83,433.23

Finding the Fourth Proportional to 86,426.45, 129,438.25 and 83,433.23

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Solution

The fourth proportional to 86,426.45, 129,438.25 and 83,433.23 is: 124,955.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,426.45 : 129,438.25 = 83,433.23 : x
  2. Step 2: Convert to fraction form
    86,426.45/129,438.25 = 83,433.23/x
  3. Step 3: Cross multiply
    86,426.45x = 129,438.25 × 83,433.23
  4. Step 4: Simplify right side
    86,426.45x = 10,799,451,283.05
  5. Step 5: Solve for x
    x = 10,799,451,283.05/86,426.45
  6. Step 6: Final answer
    x = 124,955.40

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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.