Home / 154,340.49-212,998.11-86,353.35

Finding the Fourth Proportional to 154,340.49, 212,998.11 and 86,353.35

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Solution

The fourth proportional to 154,340.49, 212,998.11 and 86,353.35 is: 119,172.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,340.49 : 212,998.11 = 86,353.35 : x
  2. Step 2: Convert to fraction form
    154,340.49/212,998.11 = 86,353.35/x
  3. Step 3: Cross multiply
    154,340.49x = 212,998.11 × 86,353.35
  4. Step 4: Simplify right side
    154,340.49x = 18,393,100,342.17
  5. Step 5: Solve for x
    x = 18,393,100,342.17/154,340.49
  6. Step 6: Final answer
    x = 119,172.23

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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.