Home / 128,266,847.76-176,893,958.96-100,016,223.14

Finding the Fourth Proportional to 128,266,847.76, 176,893,958.96 and 100,016,223.14

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Solution

The fourth proportional to 128,266,847.76, 176,893,958.96 and 100,016,223.14 is: 137,933,269.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,266,847.76 : 176,893,958.96 = 100,016,223.14 : x
  2. Step 2: Convert to fraction form
    128,266,847.76/176,893,958.96 = 100,016,223.14/x
  3. Step 3: Cross multiply
    128,266,847.76x = 176,893,958.96 × 100,016,223.14
  4. Step 4: Simplify right side
    128,266,847.76x = 17,692,265,671,461,364
  5. Step 5: Solve for x
    x = 17,692,265,671,461,364/128,266,847.76
  6. Step 6: Final answer
    x = 137,933,269.43

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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.