Home / 140,119.34-193,370.49-79,700.63

Finding the Fourth Proportional to 140,119.34, 193,370.49 and 79,700.63

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Solution

The fourth proportional to 140,119.34, 193,370.49 and 79,700.63 is: 109,990.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,119.34 : 193,370.49 = 79,700.63 : x
  2. Step 2: Convert to fraction form
    140,119.34/193,370.49 = 79,700.63/x
  3. Step 3: Cross multiply
    140,119.34x = 193,370.49 × 79,700.63
  4. Step 4: Simplify right side
    140,119.34x = 15,411,748,909.56
  5. Step 5: Solve for x
    x = 15,411,748,909.56/140,119.34
  6. Step 6: Final answer
    x = 109,990.17

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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.