Home / 154,240.28-212,855.92-86,259.80

Finding the Fourth Proportional to 154,240.28, 212,855.92 and 86,259.80

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Solution

The fourth proportional to 154,240.28, 212,855.92 and 86,259.80 is: 119,040.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,240.28 : 212,855.92 = 86,259.80 : x
  2. Step 2: Convert to fraction form
    154,240.28/212,855.92 = 86,259.80/x
  3. Step 3: Cross multiply
    154,240.28x = 212,855.92 × 86,259.80
  4. Step 4: Simplify right side
    154,240.28x = 18,360,909,088.02
  5. Step 5: Solve for x
    x = 18,360,909,088.02/154,240.28
  6. Step 6: Final answer
    x = 119,040.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.