Home / 145,215,071.09-200,390,967.17-79,134,160.94

Finding the Fourth Proportional to 145,215,071.09, 200,390,967.17 and 79,134,160.94

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Solution

The fourth proportional to 145,215,071.09, 200,390,967.17 and 79,134,160.94 is: 109,201,964.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,215,071.09 : 200,390,967.17 = 79,134,160.94 : x
  2. Step 2: Convert to fraction form
    145,215,071.09/200,390,967.17 = 79,134,160.94/x
  3. Step 3: Cross multiply
    145,215,071.09x = 200,390,967.17 × 79,134,160.94
  4. Step 4: Simplify right side
    145,215,071.09x = 15,857,771,046,557,364
  5. Step 5: Solve for x
    x = 15,857,771,046,557,364/145,215,071.09
  6. Step 6: Final answer
    x = 109,201,964.56

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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.