Home / 138,323.18-190,884.09-77,894.54

Finding the Fourth Proportional to 138,323.18, 190,884.09 and 77,894.54

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Solution

The fourth proportional to 138,323.18, 190,884.09 and 77,894.54 is: 107,493.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,323.18 : 190,884.09 = 77,894.54 : x
  2. Step 2: Convert to fraction form
    138,323.18/190,884.09 = 77,894.54/x
  3. Step 3: Cross multiply
    138,323.18x = 190,884.09 × 77,894.54
  4. Step 4: Simplify right side
    138,323.18x = 14,868,827,429.45
  5. Step 5: Solve for x
    x = 14,868,827,429.45/138,323.18
  6. Step 6: Final answer
    x = 107,493.39

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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.