Home / 100,864.17-139,190.04-55,541.79

Finding the Fourth Proportional to 100,864.17, 139,190.04 and 55,541.79

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Solution

The fourth proportional to 100,864.17, 139,190.04 and 55,541.79 is: 76,646.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,864.17 : 139,190.04 = 55,541.79 : x
  2. Step 2: Convert to fraction form
    100,864.17/139,190.04 = 55,541.79/x
  3. Step 3: Cross multiply
    100,864.17x = 139,190.04 × 55,541.79
  4. Step 4: Simplify right side
    100,864.17x = 7,730,863,971.77
  5. Step 5: Solve for x
    x = 7,730,863,971.77/100,864.17
  6. Step 6: Final answer
    x = 76,646.29

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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.