Home / 145,215,069.84-200,390,965.46-79,134,159.68

Finding the Fourth Proportional to 145,215,069.84, 200,390,965.46 and 79,134,159.68

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Solution

The fourth proportional to 145,215,069.84, 200,390,965.46 and 79,134,159.68 is: 109,201,962.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,215,069.84 : 200,390,965.46 = 79,134,159.68 : x
  2. Step 2: Convert to fraction form
    145,215,069.84/200,390,965.46 = 79,134,159.68/x
  3. Step 3: Cross multiply
    145,215,069.84x = 200,390,965.46 × 79,134,159.68
  4. Step 4: Simplify right side
    145,215,069.84x = 15,857,770,659,141,006
  5. Step 5: Solve for x
    x = 15,857,770,659,141,006/145,215,069.84
  6. Step 6: Final answer
    x = 109,201,962.83

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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.