Home / 138,733.60-191,452-75,071.36

Finding the Fourth Proportional to 138,733.60, 191,452 and 75,071.36

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Solution

The fourth proportional to 138,733.60, 191,452 and 75,071.36 is: 103,598.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,733.60 : 191,452 = 75,071.36 : x
  2. Step 2: Convert to fraction form
    138,733.60/191,452 = 75,071.36/x
  3. Step 3: Cross multiply
    138,733.60x = 191,452 × 75,071.36
  4. Step 4: Simplify right side
    138,733.60x = 14,372,562,014.72
  5. Step 5: Solve for x
    x = 14,372,562,014.72/138,733.60
  6. Step 6: Final answer
    x = 103,598.28

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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.