Home / 131,397,669.90-181,329,958.80-72,664,286.40

Finding the Fourth Proportional to 131,397,669.90, 181,329,958.80 and 72,664,286.40

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Solution

The fourth proportional to 131,397,669.90, 181,329,958.80 and 72,664,286.40 is: 100,277,364.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,397,669.90 : 181,329,958.80 = 72,664,286.40 : x
  2. Step 2: Convert to fraction form
    131,397,669.90/181,329,958.80 = 72,664,286.40/x
  3. Step 3: Cross multiply
    131,397,669.90x = 181,329,958.80 × 72,664,286.40
  4. Step 4: Simplify right side
    131,397,669.90x = 13,176,212,059,143,402
  5. Step 5: Solve for x
    x = 13,176,212,059,143,402/131,397,669.90
  6. Step 6: Final answer
    x = 100,277,364.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.