Home / 138,628.96-191,307.26-74,966.60

Finding the Fourth Proportional to 138,628.96, 191,307.26 and 74,966.60

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Solution

The fourth proportional to 138,628.96, 191,307.26 and 74,966.60 is: 103,453.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,628.96 : 191,307.26 = 74,966.60 : x
  2. Step 2: Convert to fraction form
    138,628.96/191,307.26 = 74,966.60/x
  3. Step 3: Cross multiply
    138,628.96x = 191,307.26 × 74,966.60
  4. Step 4: Simplify right side
    138,628.96x = 14,341,654,837.52
  5. Step 5: Solve for x
    x = 14,341,654,837.52/138,628.96
  6. Step 6: Final answer
    x = 103,453.53

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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.