Home / 128,328,680.40-192,493,020.60-42,046,281.60

Finding the Fourth Proportional to 128,328,680.40, 192,493,020.60 and 42,046,281.60

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Solution

The fourth proportional to 128,328,680.40, 192,493,020.60 and 42,046,281.60 is: 63,069,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,328,680.40 : 192,493,020.60 = 42,046,281.60 : x
  2. Step 2: Convert to fraction form
    128,328,680.40/192,493,020.60 = 42,046,281.60/x
  3. Step 3: Cross multiply
    128,328,680.40x = 192,493,020.60 × 42,046,281.60
  4. Step 4: Simplify right side
    128,328,680.40x = 8,093,615,750,182,201
  5. Step 5: Solve for x
    x = 8,093,615,750,182,201/128,328,680.40
  6. Step 6: Final answer
    x = 63,069,422.40

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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.