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Finding the Fourth Proportional to 145,416.80, 218,125.20 and 51,910.40

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Solution

The fourth proportional to 145,416.80, 218,125.20 and 51,910.40 is: 77,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,416.80 : 218,125.20 = 51,910.40 : x
  2. Step 2: Convert to fraction form
    145,416.80/218,125.20 = 51,910.40/x
  3. Step 3: Cross multiply
    145,416.80x = 218,125.20 × 51,910.40
  4. Step 4: Simplify right side
    145,416.80x = 11,322,966,382.08
  5. Step 5: Solve for x
    x = 11,322,966,382.08/145,416.80
  6. Step 6: Final answer
    x = 77,865.60

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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.