Home / 142,161.76-213,300.64-91,587.21

Finding the Fourth Proportional to 142,161.76, 213,300.64 and 91,587.21

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Solution

The fourth proportional to 142,161.76, 213,300.64 and 91,587.21 is: 137,418.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,161.76 : 213,300.64 = 91,587.21 : x
  2. Step 2: Convert to fraction form
    142,161.76/213,300.64 = 91,587.21/x
  3. Step 3: Cross multiply
    142,161.76x = 213,300.64 × 91,587.21
  4. Step 4: Simplify right side
    142,161.76x = 19,535,611,623.15
  5. Step 5: Solve for x
    x = 19,535,611,623.15/142,161.76
  6. Step 6: Final answer
    x = 137,418.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.