Home / 143,309,675.20-214,964,512.80-85,772,329.60

Finding the Fourth Proportional to 143,309,675.20, 214,964,512.80 and 85,772,329.60

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Solution

The fourth proportional to 143,309,675.20, 214,964,512.80 and 85,772,329.60 is: 128,658,494.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,309,675.20 : 214,964,512.80 = 85,772,329.60 : x
  2. Step 2: Convert to fraction form
    143,309,675.20/214,964,512.80 = 85,772,329.60/x
  3. Step 3: Cross multiply
    143,309,675.20x = 214,964,512.80 × 85,772,329.60
  4. Step 4: Simplify right side
    143,309,675.20x = 18,438,007,044,185,020
  5. Step 5: Solve for x
    x = 18,438,007,044,185,020/143,309,675.20
  6. Step 6: Final answer
    x = 128,658,494.40

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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.