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Finding the Fourth Proportional to 158,852.92, 219,217.72 and 90,870.64

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Solution

The fourth proportional to 158,852.92, 219,217.72 and 90,870.64 is: 125,401.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,852.92 : 219,217.72 = 90,870.64 : x
  2. Step 2: Convert to fraction form
    158,852.92/219,217.72 = 90,870.64/x
  3. Step 3: Cross multiply
    158,852.92x = 219,217.72 × 90,870.64
  4. Step 4: Simplify right side
    158,852.92x = 19,920,454,515.74
  5. Step 5: Solve for x
    x = 19,920,454,515.74/158,852.92
  6. Step 6: Final answer
    x = 125,401.88

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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.