Home / 145,215,068.84-200,390,964.07-79,134,158.69

Finding the Fourth Proportional to 145,215,068.84, 200,390,964.07 and 79,134,158.69

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Solution

The fourth proportional to 145,215,068.84, 200,390,964.07 and 79,134,158.69 is: 109,201,961.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,215,068.84 : 200,390,964.07 = 79,134,158.69 : x
  2. Step 2: Convert to fraction form
    145,215,068.84/200,390,964.07 = 79,134,158.69/x
  3. Step 3: Cross multiply
    145,215,068.84x = 200,390,964.07 × 79,134,158.69
  4. Step 4: Simplify right side
    145,215,068.84x = 15,857,770,350,757,468
  5. Step 5: Solve for x
    x = 15,857,770,350,757,468/145,215,068.84
  6. Step 6: Final answer
    x = 109,201,961.46

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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.