Home / 142,720.30-214,091.52-42,872.68

Finding the Fourth Proportional to 142,720.30, 214,091.52 and 42,872.68

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Solution

The fourth proportional to 142,720.30, 214,091.52 and 42,872.68 is: 64,312.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,720.30 : 214,091.52 = 42,872.68 : x
  2. Step 2: Convert to fraction form
    142,720.30/214,091.52 = 42,872.68/x
  3. Step 3: Cross multiply
    142,720.30x = 214,091.52 × 42,872.68
  4. Step 4: Simplify right side
    142,720.30x = 9,178,677,227.67
  5. Step 5: Solve for x
    x = 9,178,677,227.67/142,720.30
  6. Step 6: Final answer
    x = 64,312.35

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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.