Home / 154,210.52-212,806.18-86,227.60

Finding the Fourth Proportional to 154,210.52, 212,806.18 and 86,227.60

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Solution

The fourth proportional to 154,210.52, 212,806.18 and 86,227.60 is: 118,991.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,210.52 : 212,806.18 = 86,227.60 : x
  2. Step 2: Convert to fraction form
    154,210.52/212,806.18 = 86,227.60/x
  3. Step 3: Cross multiply
    154,210.52x = 212,806.18 × 86,227.60
  4. Step 4: Simplify right side
    154,210.52x = 18,349,766,166.57
  5. Step 5: Solve for x
    x = 18,349,766,166.57/154,210.52
  6. Step 6: Final answer
    x = 118,991.66

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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.