Home / 211,428,191.36-291,895,995.76-133,178,818.56

Finding the Fourth Proportional to 211,428,191.36, 291,895,995.76 and 133,178,818.56

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Solution

The fourth proportional to 211,428,191.36, 291,895,995.76 and 133,178,818.56 is: 183,865,564.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,428,191.36 : 291,895,995.76 = 133,178,818.56 : x
  2. Step 2: Convert to fraction form
    211,428,191.36/291,895,995.76 = 133,178,818.56/x
  3. Step 3: Cross multiply
    211,428,191.36x = 291,895,995.76 × 133,178,818.56
  4. Step 4: Simplify right side
    211,428,191.36x = 38,874,363,857,711,568
  5. Step 5: Solve for x
    x = 38,874,363,857,711,568/211,428,191.36
  6. Step 6: Final answer
    x = 183,865,564.98

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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.