Home / 129,364,421.56-178,603,484.04-82,348,033.12

Finding the Fourth Proportional to 129,364,421.56, 178,603,484.04 and 82,348,033.12

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Solution

The fourth proportional to 129,364,421.56, 178,603,484.04 and 82,348,033.12 is: 113,691,581.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,364,421.56 : 178,603,484.04 = 82,348,033.12 : x
  2. Step 2: Convert to fraction form
    129,364,421.56/178,603,484.04 = 82,348,033.12/x
  3. Step 3: Cross multiply
    129,364,421.56x = 178,603,484.04 × 82,348,033.12
  4. Step 4: Simplify right side
    129,364,421.56x = 14,707,645,619,073,312
  5. Step 5: Solve for x
    x = 14,707,645,619,073,312/129,364,421.56
  6. Step 6: Final answer
    x = 113,691,581.05

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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.