Home / 142,136.19-196,070.31-99,047.43

Finding the Fourth Proportional to 142,136.19, 196,070.31 and 99,047.43

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Solution

The fourth proportional to 142,136.19, 196,070.31 and 99,047.43 is: 136,631.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,136.19 : 196,070.31 = 99,047.43 : x
  2. Step 2: Convert to fraction form
    142,136.19/196,070.31 = 99,047.43/x
  3. Step 3: Cross multiply
    142,136.19x = 196,070.31 × 99,047.43
  4. Step 4: Simplify right side
    142,136.19x = 19,420,260,304.80
  5. Step 5: Solve for x
    x = 19,420,260,304.80/142,136.19
  6. Step 6: Final answer
    x = 136,631.36

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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.