Home / 156,915.20-235,372.80-145,395.20

Finding the Fourth Proportional to 156,915.20, 235,372.80 and 145,395.20

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Solution

The fourth proportional to 156,915.20, 235,372.80 and 145,395.20 is: 218,092.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,915.20 : 235,372.80 = 145,395.20 : x
  2. Step 2: Convert to fraction form
    156,915.20/235,372.80 = 145,395.20/x
  3. Step 3: Cross multiply
    156,915.20x = 235,372.80 × 145,395.20
  4. Step 4: Simplify right side
    156,915.20x = 34,222,075,330.56
  5. Step 5: Solve for x
    x = 34,222,075,330.56/156,915.20
  6. Step 6: Final answer
    x = 218,092.80

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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.