Home / 129,072.83-178,119.20-70,930.52

Finding the Fourth Proportional to 129,072.83, 178,119.20 and 70,930.52

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Solution

The fourth proportional to 129,072.83, 178,119.20 and 70,930.52 is: 97,883.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,072.83 : 178,119.20 = 70,930.52 : x
  2. Step 2: Convert to fraction form
    129,072.83/178,119.20 = 70,930.52/x
  3. Step 3: Cross multiply
    129,072.83x = 178,119.20 × 70,930.52
  4. Step 4: Simplify right side
    129,072.83x = 12,634,087,477.98
  5. Step 5: Solve for x
    x = 12,634,087,477.98/129,072.83
  6. Step 6: Final answer
    x = 97,883.40

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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.