Home / 121,011.40-181,517.10-89,907.40

Finding the Fourth Proportional to 121,011.40, 181,517.10 and 89,907.40

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Solution

The fourth proportional to 121,011.40, 181,517.10 and 89,907.40 is: 134,861.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,011.40 : 181,517.10 = 89,907.40 : x
  2. Step 2: Convert to fraction form
    121,011.40/181,517.10 = 89,907.40/x
  3. Step 3: Cross multiply
    121,011.40x = 181,517.10 × 89,907.40
  4. Step 4: Simplify right side
    121,011.40x = 16,319,730,516.54
  5. Step 5: Solve for x
    x = 16,319,730,516.54/121,011.40
  6. Step 6: Final answer
    x = 134,861.10

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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.