Home / 145,633,998.80-218,304,031.80-72,738,664.40

Finding the Fourth Proportional to 145,633,998.80, 218,304,031.80 and 72,738,664.40

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Solution

The fourth proportional to 145,633,998.80, 218,304,031.80 and 72,738,664.40 is: 109,034,592.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,633,998.80 : 218,304,031.80 = 72,738,664.40 : x
  2. Step 2: Convert to fraction form
    145,633,998.80/218,304,031.80 = 72,738,664.40/x
  3. Step 3: Cross multiply
    145,633,998.80x = 218,304,031.80 × 72,738,664.40
  4. Step 4: Simplify right side
    145,633,998.80x = 15,879,143,706,267,130
  5. Step 5: Solve for x
    x = 15,879,143,706,267,130/145,633,998.80
  6. Step 6: Final answer
    x = 109,034,592.45

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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.