Home / 142,703.20-213,795.60-87,234.40

Finding the Fourth Proportional to 142,703.20, 213,795.60 and 87,234.40

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Solution

The fourth proportional to 142,703.20, 213,795.60 and 87,234.40 is: 130,693.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,703.20 : 213,795.60 = 87,234.40 : x
  2. Step 2: Convert to fraction form
    142,703.20/213,795.60 = 87,234.40/x
  3. Step 3: Cross multiply
    142,703.20x = 213,795.60 × 87,234.40
  4. Step 4: Simplify right side
    142,703.20x = 18,650,330,888.64
  5. Step 5: Solve for x
    x = 18,650,330,888.64/142,703.20
  6. Step 6: Final answer
    x = 130,693.15

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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.