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Finding the Fourth Proportional to 125,298.99, 187,960.37 and 45,357.12

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Solution

The fourth proportional to 125,298.99, 187,960.37 and 45,357.12 is: 68,039.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,298.99 : 187,960.37 = 45,357.12 : x
  2. Step 2: Convert to fraction form
    125,298.99/187,960.37 = 45,357.12/x
  3. Step 3: Cross multiply
    125,298.99x = 187,960.37 × 45,357.12
  4. Step 4: Simplify right side
    125,298.99x = 8,525,340,830.55
  5. Step 5: Solve for x
    x = 8,525,340,830.55/125,298.99
  6. Step 6: Final answer
    x = 68,039.98

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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.