Home / 156,690.30-235,035.45-139,631.70

Finding the Fourth Proportional to 156,690.30, 235,035.45 and 139,631.70

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Solution

The fourth proportional to 156,690.30, 235,035.45 and 139,631.70 is: 209,447.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,690.30 : 235,035.45 = 139,631.70 : x
  2. Step 2: Convert to fraction form
    156,690.30/235,035.45 = 139,631.70/x
  3. Step 3: Cross multiply
    156,690.30x = 235,035.45 × 139,631.70
  4. Step 4: Simplify right side
    156,690.30x = 32,818,399,443.77
  5. Step 5: Solve for x
    x = 32,818,399,443.77/156,690.30
  6. Step 6: Final answer
    x = 209,447.55

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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.