Home / 143,554.66-197,900.14-100,981.06

Finding the Fourth Proportional to 143,554.66, 197,900.14 and 100,981.06

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Solution

The fourth proportional to 143,554.66, 197,900.14 and 100,981.06 is: 139,209.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,554.66 : 197,900.14 = 100,981.06 : x
  2. Step 2: Convert to fraction form
    143,554.66/197,900.14 = 100,981.06/x
  3. Step 3: Cross multiply
    143,554.66x = 197,900.14 × 100,981.06
  4. Step 4: Simplify right side
    143,554.66x = 19,984,165,911.35
  5. Step 5: Solve for x
    x = 19,984,165,911.35/143,554.66
  6. Step 6: Final answer
    x = 139,209.45

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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.