Home / 143,901.60-198,522-99,111.84

Finding the Fourth Proportional to 143,901.60, 198,522 and 99,111.84

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Solution

The fourth proportional to 143,901.60, 198,522 and 99,111.84 is: 136,731.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,901.60 : 198,522 = 99,111.84 : x
  2. Step 2: Convert to fraction form
    143,901.60/198,522 = 99,111.84/x
  3. Step 3: Cross multiply
    143,901.60x = 198,522 × 99,111.84
  4. Step 4: Simplify right side
    143,901.60x = 19,675,880,700.48
  5. Step 5: Solve for x
    x = 19,675,880,700.48/143,901.60
  6. Step 6: Final answer
    x = 136,731.49

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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.