Home / 156,683.10-235,125.45-86,612.70

Finding the Fourth Proportional to 156,683.10, 235,125.45 and 86,612.70

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Solution

The fourth proportional to 156,683.10, 235,125.45 and 86,612.70 is: 129,974.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,683.10 : 235,125.45 = 86,612.70 : x
  2. Step 2: Convert to fraction form
    156,683.10/235,125.45 = 86,612.70/x
  3. Step 3: Cross multiply
    156,683.10x = 235,125.45 × 86,612.70
  4. Step 4: Simplify right side
    156,683.10x = 20,364,850,063.22
  5. Step 5: Solve for x
    x = 20,364,850,063.22/156,683.10
  6. Step 6: Final answer
    x = 129,974.77

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1.5x scale

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.