Home / 121,245,179.20-181,867,768.80-72,872,238.40

Finding the Fourth Proportional to 121,245,179.20, 181,867,768.80 and 72,872,238.40

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Solution

The fourth proportional to 121,245,179.20, 181,867,768.80 and 72,872,238.40 is: 109,308,357.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,245,179.20 : 181,867,768.80 = 72,872,238.40 : x
  2. Step 2: Convert to fraction form
    121,245,179.20/181,867,768.80 = 72,872,238.40/x
  3. Step 3: Cross multiply
    121,245,179.20x = 181,867,768.80 × 72,872,238.40
  4. Step 4: Simplify right side
    121,245,179.20x = 13,253,111,405,269,684
  5. Step 5: Solve for x
    x = 13,253,111,405,269,684/121,245,179.20
  6. Step 6: Final answer
    x = 109,308,357.60

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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.