Home / 145,848.40-218,335.20-86,653.60

Finding the Fourth Proportional to 145,848.40, 218,335.20 and 86,653.60

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Solution

The fourth proportional to 145,848.40, 218,335.20 and 86,653.60 is: 129,720.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,848.40 : 218,335.20 = 86,653.60 : x
  2. Step 2: Convert to fraction form
    145,848.40/218,335.20 = 86,653.60/x
  3. Step 3: Cross multiply
    145,848.40x = 218,335.20 × 86,653.60
  4. Step 4: Simplify right side
    145,848.40x = 18,919,531,086.72
  5. Step 5: Solve for x
    x = 18,919,531,086.72/145,848.40
  6. Step 6: Final answer
    x = 129,720.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.