Home / 142,828.92-214,399.08-105,272.64

Finding the Fourth Proportional to 142,828.92, 214,399.08 and 105,272.64

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Solution

The fourth proportional to 142,828.92, 214,399.08 and 105,272.64 is: 158,023.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,828.92 : 214,399.08 = 105,272.64 : x
  2. Step 2: Convert to fraction form
    142,828.92/214,399.08 = 105,272.64/x
  3. Step 3: Cross multiply
    142,828.92x = 214,399.08 × 105,272.64
  4. Step 4: Simplify right side
    142,828.92x = 22,570,357,165.17
  5. Step 5: Solve for x
    x = 22,570,357,165.17/142,828.92
  6. Step 6: Final answer
    x = 158,023.72

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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.