Home / 129,606.42-178,788.60-89,250.24

Finding the Fourth Proportional to 129,606.42, 178,788.60 and 89,250.24

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Solution

The fourth proportional to 129,606.42, 178,788.60 and 89,250.24 is: 123,118.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,606.42 : 178,788.60 = 89,250.24 : x
  2. Step 2: Convert to fraction form
    129,606.42/178,788.60 = 89,250.24/x
  3. Step 3: Cross multiply
    129,606.42x = 178,788.60 × 89,250.24
  4. Step 4: Simplify right side
    129,606.42x = 15,956,925,459.26
  5. Step 5: Solve for x
    x = 15,956,925,459.26/129,606.42
  6. Step 6: Final answer
    x = 123,118.33

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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.