Home / 154,792.90-213,599.28-86,812.66

Finding the Fourth Proportional to 154,792.90, 213,599.28 and 86,812.66

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Solution

The fourth proportional to 154,792.90, 213,599.28 and 86,812.66 is: 119,793.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,792.90 : 213,599.28 = 86,812.66 : x
  2. Step 2: Convert to fraction form
    154,792.90/213,599.28 = 86,812.66/x
  3. Step 3: Cross multiply
    154,792.90x = 213,599.28 × 86,812.66
  4. Step 4: Simplify right side
    154,792.90x = 18,543,121,670.88
  5. Step 5: Solve for x
    x = 18,543,121,670.88/154,792.90
  6. Step 6: Final answer
    x = 119,793.10

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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.