Home / 129,054.15-178,088.94-71,697.50

Finding the Fourth Proportional to 129,054.15, 178,088.94 and 71,697.50

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Solution

The fourth proportional to 129,054.15, 178,088.94 and 71,697.50 is: 98,939.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,054.15 : 178,088.94 = 71,697.50 : x
  2. Step 2: Convert to fraction form
    129,054.15/178,088.94 = 71,697.50/x
  3. Step 3: Cross multiply
    129,054.15x = 178,088.94 × 71,697.50
  4. Step 4: Simplify right side
    129,054.15x = 12,768,530,885.21
  5. Step 5: Solve for x
    x = 12,768,530,885.21/129,054.15
  6. Step 6: Final answer
    x = 98,939.33

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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.