Home / 143,942.90-198,733.65-90,301.46

Finding the Fourth Proportional to 143,942.90, 198,733.65 and 90,301.46

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Solution

The fourth proportional to 143,942.90, 198,733.65 and 90,301.46 is: 124,674.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,942.90 : 198,733.65 = 90,301.46 : x
  2. Step 2: Convert to fraction form
    143,942.90/198,733.65 = 90,301.46/x
  3. Step 3: Cross multiply
    143,942.90x = 198,733.65 × 90,301.46
  4. Step 4: Simplify right side
    143,942.90x = 17,945,938,746.13
  5. Step 5: Solve for x
    x = 17,945,938,746.13/143,942.90
  6. Step 6: Final answer
    x = 124,674.01

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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.