Home / 129,322.42-178,464.90-72,733.75

Finding the Fourth Proportional to 129,322.42, 178,464.90 and 72,733.75

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Solution

The fourth proportional to 129,322.42, 178,464.90 and 72,733.75 is: 100,372.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,322.42 : 178,464.90 = 72,733.75 : x
  2. Step 2: Convert to fraction form
    129,322.42/178,464.90 = 72,733.75/x
  3. Step 3: Cross multiply
    129,322.42x = 178,464.90 × 72,733.75
  4. Step 4: Simplify right side
    129,322.42x = 12,980,421,420.38
  5. Step 5: Solve for x
    x = 12,980,421,420.38/129,322.42
  6. Step 6: Final answer
    x = 100,372.55

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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.