Home / 128,259,903.51-176,993,924.97-69,521,307.50

Finding the Fourth Proportional to 128,259,903.51, 176,993,924.97 and 69,521,307.50

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Solution

The fourth proportional to 128,259,903.51, 176,993,924.97 and 69,521,307.50 is: 95,936,834.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,259,903.51 : 176,993,924.97 = 69,521,307.50 : x
  2. Step 2: Convert to fraction form
    128,259,903.51/176,993,924.97 = 69,521,307.50/x
  3. Step 3: Cross multiply
    128,259,903.51x = 176,993,924.97 × 69,521,307.50
  4. Step 4: Simplify right side
    128,259,903.51x = 12,304,849,083,471,298
  5. Step 5: Solve for x
    x = 12,304,849,083,471,298/128,259,903.51
  6. Step 6: Final answer
    x = 95,936,834.09

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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.