Home / 156,938.60-235,407.90-68,292.20

Finding the Fourth Proportional to 156,938.60, 235,407.90 and 68,292.20

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Solution

The fourth proportional to 156,938.60, 235,407.90 and 68,292.20 is: 102,438.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,938.60 : 235,407.90 = 68,292.20 : x
  2. Step 2: Convert to fraction form
    156,938.60/235,407.90 = 68,292.20/x
  3. Step 3: Cross multiply
    156,938.60x = 235,407.90 × 68,292.20
  4. Step 4: Simplify right side
    156,938.60x = 16,076,523,388.38
  5. Step 5: Solve for x
    x = 16,076,523,388.38/156,938.60
  6. Step 6: Final answer
    x = 102,438.30

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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.