Home / 85,329,851.60-128,293,375.80-83,538,261.20

Finding the Fourth Proportional to 85,329,851.60, 128,293,375.80 and 83,538,261.20

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Solution

The fourth proportional to 85,329,851.60, 128,293,375.80 and 83,538,261.20 is: 125,599,720.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,329,851.60 : 128,293,375.80 = 83,538,261.20 : x
  2. Step 2: Convert to fraction form
    85,329,851.60/128,293,375.80 = 83,538,261.20/x
  3. Step 3: Cross multiply
    85,329,851.60x = 128,293,375.80 × 83,538,261.20
  4. Step 4: Simplify right side
    85,329,851.60x = 10,717,405,537,810,160
  5. Step 5: Solve for x
    x = 10,717,405,537,810,160/85,329,851.60
  6. Step 6: Final answer
    x = 125,599,720.81

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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.