Home / 125,455.73-172,890.25-123,150.15

Finding the Fourth Proportional to 125,455.73, 172,890.25 and 123,150.15

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Solution

The fourth proportional to 125,455.73, 172,890.25 and 123,150.15 is: 169,712.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,455.73 : 172,890.25 = 123,150.15 : x
  2. Step 2: Convert to fraction form
    125,455.73/172,890.25 = 123,150.15/x
  3. Step 3: Cross multiply
    125,455.73x = 172,890.25 × 123,150.15
  4. Step 4: Simplify right side
    125,455.73x = 21,291,459,913.16
  5. Step 5: Solve for x
    x = 21,291,459,913.16/125,455.73
  6. Step 6: Final answer
    x = 169,712.94

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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.