Home / 86,428.45-129,441.25-83,435.23

Finding the Fourth Proportional to 86,428.45, 129,441.25 and 83,435.23

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Solution

The fourth proportional to 86,428.45, 129,441.25 and 83,435.23 is: 124,958.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,428.45 : 129,441.25 = 83,435.23 : x
  2. Step 2: Convert to fraction form
    86,428.45/129,441.25 = 83,435.23/x
  3. Step 3: Cross multiply
    86,428.45x = 129,441.25 × 83,435.23
  4. Step 4: Simplify right side
    86,428.45x = 10,799,960,465.24
  5. Step 5: Solve for x
    x = 10,799,960,465.24/86,428.45
  6. Step 6: Final answer
    x = 124,958.40

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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.