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Finding the Fourth Proportional to 144,555.20, 216,870.60 and 55,811.60

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Solution

The fourth proportional to 144,555.20, 216,870.60 and 55,811.60 is: 83,731.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,555.20 : 216,870.60 = 55,811.60 : x
  2. Step 2: Convert to fraction form
    144,555.20/216,870.60 = 55,811.60/x
  3. Step 3: Cross multiply
    144,555.20x = 216,870.60 × 55,811.60
  4. Step 4: Simplify right side
    144,555.20x = 12,103,895,178.96
  5. Step 5: Solve for x
    x = 12,103,895,178.96/144,555.20
  6. Step 6: Final answer
    x = 83,731.99

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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.