Home / 103,799.04-143,192.96-99,775.36

Finding the Fourth Proportional to 103,799.04, 143,192.96 and 99,775.36

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Solution

The fourth proportional to 103,799.04, 143,192.96 and 99,775.36 is: 137,642.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,799.04 : 143,192.96 = 99,775.36 : x
  2. Step 2: Convert to fraction form
    103,799.04/143,192.96 = 99,775.36/x
  3. Step 3: Cross multiply
    103,799.04x = 143,192.96 × 99,775.36
  4. Step 4: Simplify right side
    103,799.04x = 14,287,129,133.47
  5. Step 5: Solve for x
    x = 14,287,129,133.47/103,799.04
  6. Step 6: Final answer
    x = 137,642.21

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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.