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Finding the Fourth Proportional to 158,973.91, 219,396.20 and 91,012.20

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Solution

The fourth proportional to 158,973.91, 219,396.20 and 91,012.20 is: 125,603.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,973.91 : 219,396.20 = 91,012.20 : x
  2. Step 2: Convert to fraction form
    158,973.91/219,396.20 = 91,012.20/x
  3. Step 3: Cross multiply
    158,973.91x = 219,396.20 × 91,012.20
  4. Step 4: Simplify right side
    158,973.91x = 19,967,730,833.64
  5. Step 5: Solve for x
    x = 19,967,730,833.64/158,973.91
  6. Step 6: Final answer
    x = 125,603.82

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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.