Home / 156,307.59-215,546.40-139,025.39

Finding the Fourth Proportional to 156,307.59, 215,546.40 and 139,025.39

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Solution

The fourth proportional to 156,307.59, 215,546.40 and 139,025.39 is: 191,714.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,307.59 : 215,546.40 = 139,025.39 : x
  2. Step 2: Convert to fraction form
    156,307.59/215,546.40 = 139,025.39/x
  3. Step 3: Cross multiply
    156,307.59x = 215,546.40 × 139,025.39
  4. Step 4: Simplify right side
    156,307.59x = 29,966,421,245.36
  5. Step 5: Solve for x
    x = 29,966,421,245.36/156,307.59
  6. Step 6: Final answer
    x = 191,714.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.