Home / 154,395.20-213,069.20-86,411.60

Finding the Fourth Proportional to 154,395.20, 213,069.20 and 86,411.60

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Solution

The fourth proportional to 154,395.20, 213,069.20 and 86,411.60 is: 119,250.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,395.20 : 213,069.20 = 86,411.60 : x
  2. Step 2: Convert to fraction form
    154,395.20/213,069.20 = 86,411.60/x
  3. Step 3: Cross multiply
    154,395.20x = 213,069.20 × 86,411.60
  4. Step 4: Simplify right side
    154,395.20x = 18,411,650,482.72
  5. Step 5: Solve for x
    x = 18,411,650,482.72/154,395.20
  6. Step 6: Final answer
    x = 119,250.15

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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.