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Finding the Fourth Proportional to 125,394.60, 189,208.95 and 120,534.12

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Solution

The fourth proportional to 125,394.60, 189,208.95 and 120,534.12 is: 181,874.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,394.60 : 189,208.95 = 120,534.12 : x
  2. Step 2: Convert to fraction form
    125,394.60/189,208.95 = 120,534.12/x
  3. Step 3: Cross multiply
    125,394.60x = 189,208.95 × 120,534.12
  4. Step 4: Simplify right side
    125,394.60x = 22,806,134,284.37
  5. Step 5: Solve for x
    x = 22,806,134,284.37/125,394.60
  6. Step 6: Final answer
    x = 181,874.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.