Home / 145,215,069.84-200,390,965.45-79,134,159.69

Finding the Fourth Proportional to 145,215,069.84, 200,390,965.45 and 79,134,159.69

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Solution

The fourth proportional to 145,215,069.84, 200,390,965.45 and 79,134,159.69 is: 109,201,962.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,215,069.84 : 200,390,965.45 = 79,134,159.69 : x
  2. Step 2: Convert to fraction form
    145,215,069.84/200,390,965.45 = 79,134,159.69/x
  3. Step 3: Cross multiply
    145,215,069.84x = 200,390,965.45 × 79,134,159.69
  4. Step 4: Simplify right side
    145,215,069.84x = 15,857,770,660,353,572
  5. Step 5: Solve for x
    x = 15,857,770,660,353,572/145,215,069.84
  6. Step 6: Final answer
    x = 109,201,962.84

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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.