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Finding the Fourth Proportional to 146,139.40, 219,209.10 and 52,611.40

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Solution

The fourth proportional to 146,139.40, 219,209.10 and 52,611.40 is: 78,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,139.40 : 219,209.10 = 52,611.40 : x
  2. Step 2: Convert to fraction form
    146,139.40/219,209.10 = 52,611.40/x
  3. Step 3: Cross multiply
    146,139.40x = 219,209.10 × 52,611.40
  4. Step 4: Simplify right side
    146,139.40x = 11,532,897,643.74
  5. Step 5: Solve for x
    x = 11,532,897,643.74/146,139.40
  6. Step 6: Final answer
    x = 78,917.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.