Home / 125,177.76-172,745.40-74,215.64

Finding the Fourth Proportional to 125,177.76, 172,745.40 and 74,215.64

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Solution

The fourth proportional to 125,177.76, 172,745.40 and 74,215.64 is: 102,417.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,177.76 : 172,745.40 = 74,215.64 : x
  2. Step 2: Convert to fraction form
    125,177.76/172,745.40 = 74,215.64/x
  3. Step 3: Cross multiply
    125,177.76x = 172,745.40 × 74,215.64
  4. Step 4: Simplify right side
    125,177.76x = 12,820,410,418.06
  5. Step 5: Solve for x
    x = 12,820,410,418.06/125,177.76
  6. Step 6: Final answer
    x = 102,417.64

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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.