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Finding the Fourth Proportional to 144,501.60, 216,723.60 and 69,621.60

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Solution

The fourth proportional to 144,501.60, 216,723.60 and 69,621.60 is: 104,418.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,501.60 : 216,723.60 = 69,621.60 : x
  2. Step 2: Convert to fraction form
    144,501.60/216,723.60 = 69,621.60/x
  3. Step 3: Cross multiply
    144,501.60x = 216,723.60 × 69,621.60
  4. Step 4: Simplify right side
    144,501.60x = 15,088,643,789.76
  5. Step 5: Solve for x
    x = 15,088,643,789.76/144,501.60
  6. Step 6: Final answer
    x = 104,418.52

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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.