Home / 142,405.10-213,628.88-52,440.89

Finding the Fourth Proportional to 142,405.10, 213,628.88 and 52,440.89

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Solution

The fourth proportional to 142,405.10, 213,628.88 and 52,440.89 is: 78,669.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,405.10 : 213,628.88 = 52,440.89 : x
  2. Step 2: Convert to fraction form
    142,405.10/213,628.88 = 52,440.89/x
  3. Step 3: Cross multiply
    142,405.10x = 213,628.88 × 52,440.89
  4. Step 4: Simplify right side
    142,405.10x = 11,202,888,193.93
  5. Step 5: Solve for x
    x = 11,202,888,193.93/142,405.10
  6. Step 6: Final answer
    x = 78,669.15

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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.