Home / 145,178.08-200,340.57-81,518.56

Finding the Fourth Proportional to 145,178.08, 200,340.57 and 81,518.56

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Solution

The fourth proportional to 145,178.08, 200,340.57 and 81,518.56 is: 112,492.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,178.08 : 200,340.57 = 81,518.56 : x
  2. Step 2: Convert to fraction form
    145,178.08/200,340.57 = 81,518.56/x
  3. Step 3: Cross multiply
    145,178.08x = 200,340.57 × 81,518.56
  4. Step 4: Simplify right side
    145,178.08x = 16,331,474,775.98
  5. Step 5: Solve for x
    x = 16,331,474,775.98/145,178.08
  6. Step 6: Final answer
    x = 112,492.70

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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.