Home / 142,653.64-214,001.32-42,821.72

Finding the Fourth Proportional to 142,653.64, 214,001.32 and 42,821.72

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Solution

The fourth proportional to 142,653.64, 214,001.32 and 42,821.72 is: 64,238.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,653.64 : 214,001.32 = 42,821.72 : x
  2. Step 2: Convert to fraction form
    142,653.64/214,001.32 = 42,821.72/x
  3. Step 3: Cross multiply
    142,653.64x = 214,001.32 × 42,821.72
  4. Step 4: Simplify right side
    142,653.64x = 9,163,904,604.67
  5. Step 5: Solve for x
    x = 9,163,904,604.67/142,653.64
  6. Step 6: Final answer
    x = 64,238.84

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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.