Home / 156,977.80-235,121.10-139,467.40

Finding the Fourth Proportional to 156,977.80, 235,121.10 and 139,467.40

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Solution

The fourth proportional to 156,977.80, 235,121.10 and 139,467.40 is: 208,894.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,977.80 : 235,121.10 = 139,467.40 : x
  2. Step 2: Convert to fraction form
    156,977.80/235,121.10 = 139,467.40/x
  3. Step 3: Cross multiply
    156,977.80x = 235,121.10 × 139,467.40
  4. Step 4: Simplify right side
    156,977.80x = 32,791,728,502.14
  5. Step 5: Solve for x
    x = 32,791,728,502.14/156,977.80
  6. Step 6: Final answer
    x = 208,894.05

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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.