Home / 135,984.40-187,654.56-77,842.60

Finding the Fourth Proportional to 135,984.40, 187,654.56 and 77,842.60

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Solution

The fourth proportional to 135,984.40, 187,654.56 and 77,842.60 is: 107,420.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,984.40 : 187,654.56 = 77,842.60 : x
  2. Step 2: Convert to fraction form
    135,984.40/187,654.56 = 77,842.60/x
  3. Step 3: Cross multiply
    135,984.40x = 187,654.56 × 77,842.60
  4. Step 4: Simplify right side
    135,984.40x = 14,607,518,852.26
  5. Step 5: Solve for x
    x = 14,607,518,852.26/135,984.40
  6. Step 6: Final answer
    x = 107,420.55

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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.