Home / 143,701.49-198,308.10-83,307.14

Finding the Fourth Proportional to 143,701.49, 198,308.10 and 83,307.14

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Solution

The fourth proportional to 143,701.49, 198,308.10 and 83,307.14 is: 114,963.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,701.49 : 198,308.10 = 83,307.14 : x
  2. Step 2: Convert to fraction form
    143,701.49/198,308.10 = 83,307.14/x
  3. Step 3: Cross multiply
    143,701.49x = 198,308.10 × 83,307.14
  4. Step 4: Simplify right side
    143,701.49x = 16,520,480,714.35
  5. Step 5: Solve for x
    x = 16,520,480,714.35/143,701.49
  6. Step 6: Final answer
    x = 114,963.88

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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.