Home / 91,211.20-136,816.80-42,059.20

Finding the Fourth Proportional to 91,211.20, 136,816.80 and 42,059.20

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Solution

The fourth proportional to 91,211.20, 136,816.80 and 42,059.20 is: 63,088.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,211.20 : 136,816.80 = 42,059.20 : x
  2. Step 2: Convert to fraction form
    91,211.20/136,816.80 = 42,059.20/x
  3. Step 3: Cross multiply
    91,211.20x = 136,816.80 × 42,059.20
  4. Step 4: Simplify right side
    91,211.20x = 5,754,405,154.56
  5. Step 5: Solve for x
    x = 5,754,405,154.56/91,211.20
  6. Step 6: Final answer
    x = 63,088.80

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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.