Home / 121,245,178.20-181,867,767.30-72,872,237.40

Finding the Fourth Proportional to 121,245,178.20, 181,867,767.30 and 72,872,237.40

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Solution

The fourth proportional to 121,245,178.20, 181,867,767.30 and 72,872,237.40 is: 109,308,356.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,245,178.20 : 181,867,767.30 = 72,872,237.40 : x
  2. Step 2: Convert to fraction form
    121,245,178.20/181,867,767.30 = 72,872,237.40/x
  3. Step 3: Cross multiply
    121,245,178.20x = 181,867,767.30 × 72,872,237.40
  4. Step 4: Simplify right side
    121,245,178.20x = 13,253,111,114,093,558
  5. Step 5: Solve for x
    x = 13,253,111,114,093,558/121,245,178.20
  6. Step 6: Final answer
    x = 109,308,356.10

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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.