Home / 129,647.02-178,912.62-70,031.02

Finding the Fourth Proportional to 129,647.02, 178,912.62 and 70,031.02

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Solution

The fourth proportional to 129,647.02, 178,912.62 and 70,031.02 is: 96,642.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,647.02 : 178,912.62 = 70,031.02 : x
  2. Step 2: Convert to fraction form
    129,647.02/178,912.62 = 70,031.02/x
  3. Step 3: Cross multiply
    129,647.02x = 178,912.62 × 70,031.02
  4. Step 4: Simplify right side
    129,647.02x = 12,529,433,269.47
  5. Step 5: Solve for x
    x = 12,529,433,269.47/129,647.02
  6. Step 6: Final answer
    x = 96,642.66

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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.