Home / 156,910.20-235,365.30-145,390.20

Finding the Fourth Proportional to 156,910.20, 235,365.30 and 145,390.20

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Solution

The fourth proportional to 156,910.20, 235,365.30 and 145,390.20 is: 218,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,910.20 : 235,365.30 = 145,390.20 : x
  2. Step 2: Convert to fraction form
    156,910.20/235,365.30 = 145,390.20/x
  3. Step 3: Cross multiply
    156,910.20x = 235,365.30 × 145,390.20
  4. Step 4: Simplify right side
    156,910.20x = 34,219,808,040.06
  5. Step 5: Solve for x
    x = 34,219,808,040.06/156,910.20
  6. Step 6: Final answer
    x = 218,085.30

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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.