Home / 156,938.10-235,407.15-139,734.90

Finding the Fourth Proportional to 156,938.10, 235,407.15 and 139,734.90

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Solution

The fourth proportional to 156,938.10, 235,407.15 and 139,734.90 is: 209,602.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,938.10 : 235,407.15 = 139,734.90 : x
  2. Step 2: Convert to fraction form
    156,938.10/235,407.15 = 139,734.90/x
  3. Step 3: Cross multiply
    156,938.10x = 235,407.15 × 139,734.90
  4. Step 4: Simplify right side
    156,938.10x = 32,894,594,564.54
  5. Step 5: Solve for x
    x = 32,894,594,564.54/156,938.10
  6. Step 6: Final answer
    x = 209,602.35

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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.