Home / 134,126.10-200,897.55-81,443.70

Finding the Fourth Proportional to 134,126.10, 200,897.55 and 81,443.70

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Solution

The fourth proportional to 134,126.10, 200,897.55 and 81,443.70 is: 121,988.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,126.10 : 200,897.55 = 81,443.70 : x
  2. Step 2: Convert to fraction form
    134,126.10/200,897.55 = 81,443.70/x
  3. Step 3: Cross multiply
    134,126.10x = 200,897.55 × 81,443.70
  4. Step 4: Simplify right side
    134,126.10x = 16,361,839,792.94
  5. Step 5: Solve for x
    x = 16,361,839,792.94/134,126.10
  6. Step 6: Final answer
    x = 121,988.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.