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Finding the Fourth Proportional to 142,053.68, 213,025.20 and 53,258.72

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Solution

The fourth proportional to 142,053.68, 213,025.20 and 53,258.72 is: 79,867.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,053.68 : 213,025.20 = 53,258.72 : x
  2. Step 2: Convert to fraction form
    142,053.68/213,025.20 = 53,258.72/x
  3. Step 3: Cross multiply
    142,053.68x = 213,025.20 × 53,258.72
  4. Step 4: Simplify right side
    142,053.68x = 11,345,449,479.74
  5. Step 5: Solve for x
    x = 11,345,449,479.74/142,053.68
  6. Step 6: Final answer
    x = 79,867.34

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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.