Home / 153,731.02-212,129.94-85,732.06

Finding the Fourth Proportional to 153,731.02, 212,129.94 and 85,732.06

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Solution

The fourth proportional to 153,731.02, 212,129.94 and 85,732.06 is: 118,299.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,731.02 : 212,129.94 = 85,732.06 : x
  2. Step 2: Convert to fraction form
    153,731.02/212,129.94 = 85,732.06/x
  3. Step 3: Cross multiply
    153,731.02x = 212,129.94 × 85,732.06
  4. Step 4: Simplify right side
    153,731.02x = 18,186,336,743.88
  5. Step 5: Solve for x
    x = 18,186,336,743.88/153,731.02
  6. Step 6: Final answer
    x = 118,299.72

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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.