Home / 139,864.50-193,013.01-76,202.28

Finding the Fourth Proportional to 139,864.50, 193,013.01 and 76,202.28

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Solution

The fourth proportional to 139,864.50, 193,013.01 and 76,202.28 is: 105,159.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,864.50 : 193,013.01 = 76,202.28 : x
  2. Step 2: Convert to fraction form
    139,864.50/193,013.01 = 76,202.28/x
  3. Step 3: Cross multiply
    139,864.50x = 193,013.01 × 76,202.28
  4. Step 4: Simplify right side
    139,864.50x = 14,708,031,431.66
  5. Step 5: Solve for x
    x = 14,708,031,431.66/139,864.50
  6. Step 6: Final answer
    x = 105,159.15

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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.