Home / 151,421.73-209,045.79-91,007.07

Finding the Fourth Proportional to 151,421.73, 209,045.79 and 91,007.07

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Solution

The fourth proportional to 151,421.73, 209,045.79 and 91,007.07 is: 125,640.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,421.73 : 209,045.79 = 91,007.07 : x
  2. Step 2: Convert to fraction form
    151,421.73/209,045.79 = 91,007.07/x
  3. Step 3: Cross multiply
    151,421.73x = 209,045.79 × 91,007.07
  4. Step 4: Simplify right side
    151,421.73x = 19,024,644,843.74
  5. Step 5: Solve for x
    x = 19,024,644,843.74/151,421.73
  6. Step 6: Final answer
    x = 125,640.12

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1.5x scale

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.