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Finding the Fourth Proportional to 112,172.13, 154,792.06 and 66,849.07

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Solution

The fourth proportional to 112,172.13, 154,792.06 and 66,849.07 is: 92,248.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,172.13 : 154,792.06 = 66,849.07 : x
  2. Step 2: Convert to fraction form
    112,172.13/154,792.06 = 66,849.07/x
  3. Step 3: Cross multiply
    112,172.13x = 154,792.06 × 66,849.07
  4. Step 4: Simplify right side
    112,172.13x = 10,347,705,254.38
  5. Step 5: Solve for x
    x = 10,347,705,254.38/112,172.13
  6. Step 6: Final answer
    x = 92,248.45

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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.