Home / 140,381.36-210,717.88-81,332.40

Finding the Fourth Proportional to 140,381.36, 210,717.88 and 81,332.40

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Solution

The fourth proportional to 140,381.36, 210,717.88 and 81,332.40 is: 122,083.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,381.36 : 210,717.88 = 81,332.40 : x
  2. Step 2: Convert to fraction form
    140,381.36/210,717.88 = 81,332.40/x
  3. Step 3: Cross multiply
    140,381.36x = 210,717.88 × 81,332.40
  4. Step 4: Simplify right side
    140,381.36x = 17,138,190,903.31
  5. Step 5: Solve for x
    x = 17,138,190,903.31/140,381.36
  6. Step 6: Final answer
    x = 122,083.09

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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.