Home / 139,774,443.20-209,661,664.80-138,924,137.60

Finding the Fourth Proportional to 139,774,443.20, 209,661,664.80 and 138,924,137.60

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Solution

The fourth proportional to 139,774,443.20, 209,661,664.80 and 138,924,137.60 is: 208,386,206.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,774,443.20 : 209,661,664.80 = 138,924,137.60 : x
  2. Step 2: Convert to fraction form
    139,774,443.20/209,661,664.80 = 138,924,137.60/x
  3. Step 3: Cross multiply
    139,774,443.20x = 209,661,664.80 × 138,924,137.60
  4. Step 4: Simplify right side
    139,774,443.20x = 29,127,065,970,120,276
  5. Step 5: Solve for x
    x = 29,127,065,970,120,276/139,774,443.20
  6. Step 6: Final answer
    x = 208,386,206.40

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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.