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Finding the Fourth Proportional to 188,065.71, 259,308.45 and 153,948.51

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Solution

The fourth proportional to 188,065.71, 259,308.45 and 153,948.51 is: 212,267.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,065.71 : 259,308.45 = 153,948.51 : x
  2. Step 2: Convert to fraction form
    188,065.71/259,308.45 = 153,948.51/x
  3. Step 3: Cross multiply
    188,065.71x = 259,308.45 × 153,948.51
  4. Step 4: Simplify right side
    188,065.71x = 39,920,149,507.91
  5. Step 5: Solve for x
    x = 39,920,149,507.91/188,065.71
  6. Step 6: Final answer
    x = 212,267.03

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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.