Home / 101,829.62-140,520-56,507.06

Finding the Fourth Proportional to 101,829.62, 140,520 and 56,507.06

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Solution

The fourth proportional to 101,829.62, 140,520 and 56,507.06 is: 77,977.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,829.62 : 140,520 = 56,507.06 : x
  2. Step 2: Convert to fraction form
    101,829.62/140,520 = 56,507.06/x
  3. Step 3: Cross multiply
    101,829.62x = 140,520 × 56,507.06
  4. Step 4: Simplify right side
    101,829.62x = 7,940,372,071.20
  5. Step 5: Solve for x
    x = 7,940,372,071.20/101,829.62
  6. Step 6: Final answer
    x = 77,977.04

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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.