Home / 137,213.63-189,329.90-79,061.30

Finding the Fourth Proportional to 137,213.63, 189,329.90 and 79,061.30

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Solution

The fourth proportional to 137,213.63, 189,329.90 and 79,061.30 is: 109,090.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,213.63 : 189,329.90 = 79,061.30 : x
  2. Step 2: Convert to fraction form
    137,213.63/189,329.90 = 79,061.30/x
  3. Step 3: Cross multiply
    137,213.63x = 189,329.90 × 79,061.30
  4. Step 4: Simplify right side
    137,213.63x = 14,968,666,680.91
  5. Step 5: Solve for x
    x = 14,968,666,680.91/137,213.63
  6. Step 6: Final answer
    x = 109,090.24

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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.