Home / 129,658.02-178,927.80-70,042.02

Finding the Fourth Proportional to 129,658.02, 178,927.80 and 70,042.02

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Solution

The fourth proportional to 129,658.02, 178,927.80 and 70,042.02 is: 96,657.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,658.02 : 178,927.80 = 70,042.02 : x
  2. Step 2: Convert to fraction form
    129,658.02/178,927.80 = 70,042.02/x
  3. Step 3: Cross multiply
    129,658.02x = 178,927.80 × 70,042.02
  4. Step 4: Simplify right side
    129,658.02x = 12,532,464,546.16
  5. Step 5: Solve for x
    x = 12,532,464,546.16/129,658.02
  6. Step 6: Final answer
    x = 96,657.84

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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.