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Finding the Fourth Proportional to 103,580.90, 154,510.67 and 101,868.20

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Solution

The fourth proportional to 103,580.90, 154,510.67 and 101,868.20 is: 151,955.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,580.90 : 154,510.67 = 101,868.20 : x
  2. Step 2: Convert to fraction form
    103,580.90/154,510.67 = 101,868.20/x
  3. Step 3: Cross multiply
    103,580.90x = 154,510.67 × 101,868.20
  4. Step 4: Simplify right side
    103,580.90x = 15,739,722,551.80
  5. Step 5: Solve for x
    x = 15,739,722,551.80/103,580.90
  6. Step 6: Final answer
    x = 151,955.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.