Home / 145,816.12-201,226.20-78,748.12

Finding the Fourth Proportional to 145,816.12, 201,226.20 and 78,748.12

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Solution

The fourth proportional to 145,816.12, 201,226.20 and 78,748.12 is: 108,672.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,816.12 : 201,226.20 = 78,748.12 : x
  2. Step 2: Convert to fraction form
    145,816.12/201,226.20 = 78,748.12/x
  3. Step 3: Cross multiply
    145,816.12x = 201,226.20 × 78,748.12
  4. Step 4: Simplify right side
    145,816.12x = 15,846,184,944.74
  5. Step 5: Solve for x
    x = 15,846,184,944.74/145,816.12
  6. Step 6: Final answer
    x = 108,672.38

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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.