Home / 156,948.20-235,422.30-145,428.20

Finding the Fourth Proportional to 156,948.20, 235,422.30 and 145,428.20

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Solution

The fourth proportional to 156,948.20, 235,422.30 and 145,428.20 is: 218,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,948.20 : 235,422.30 = 145,428.20 : x
  2. Step 2: Convert to fraction form
    156,948.20/235,422.30 = 145,428.20/x
  3. Step 3: Cross multiply
    156,948.20x = 235,422.30 × 145,428.20
  4. Step 4: Simplify right side
    156,948.20x = 34,237,041,328.86
  5. Step 5: Solve for x
    x = 34,237,041,328.86/156,948.20
  6. Step 6: Final answer
    x = 218,142.30

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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.