Home / 89,724.50-133,527.63-86,734.69

Finding the Fourth Proportional to 89,724.50, 133,527.63 and 86,734.69

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Solution

The fourth proportional to 89,724.50, 133,527.63 and 86,734.69 is: 129,078.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,724.50 : 133,527.63 = 86,734.69 : x
  2. Step 2: Convert to fraction form
    89,724.50/133,527.63 = 86,734.69/x
  3. Step 3: Cross multiply
    89,724.50x = 133,527.63 × 86,734.69
  4. Step 4: Simplify right side
    89,724.50x = 11,581,477,594.48
  5. Step 5: Solve for x
    x = 11,581,477,594.48/89,724.50
  6. Step 6: Final answer
    x = 129,078.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.