Home / 145,633,999.30-218,304,032.55-72,738,664.90

Finding the Fourth Proportional to 145,633,999.30, 218,304,032.55 and 72,738,664.90

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Solution

The fourth proportional to 145,633,999.30, 218,304,032.55 and 72,738,664.90 is: 109,034,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,633,999.30 : 218,304,032.55 = 72,738,664.90 : x
  2. Step 2: Convert to fraction form
    145,633,999.30/218,304,032.55 = 72,738,664.90/x
  3. Step 3: Cross multiply
    145,633,999.30x = 218,304,032.55 × 72,738,664.90
  4. Step 4: Simplify right side
    145,633,999.30x = 15,879,143,869,973,144
  5. Step 5: Solve for x
    x = 15,879,143,869,973,144/145,633,999.30
  6. Step 6: Final answer
    x = 109,034,593.20

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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.