Home / 156,003.80-234,005.70-77,130.20

Finding the Fourth Proportional to 156,003.80, 234,005.70 and 77,130.20

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Solution

The fourth proportional to 156,003.80, 234,005.70 and 77,130.20 is: 115,695.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,003.80 : 234,005.70 = 77,130.20 : x
  2. Step 2: Convert to fraction form
    156,003.80/234,005.70 = 77,130.20/x
  3. Step 3: Cross multiply
    156,003.80x = 234,005.70 × 77,130.20
  4. Step 4: Simplify right side
    156,003.80x = 18,048,906,442.14
  5. Step 5: Solve for x
    x = 18,048,906,442.14/156,003.80
  6. Step 6: Final answer
    x = 115,695.30

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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.