Home / 153,961.02-212,447.34-85,981.68

Finding the Fourth Proportional to 153,961.02, 212,447.34 and 85,981.68

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Solution

The fourth proportional to 153,961.02, 212,447.34 and 85,981.68 is: 118,644.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,961.02 : 212,447.34 = 85,981.68 : x
  2. Step 2: Convert to fraction form
    153,961.02/212,447.34 = 85,981.68/x
  3. Step 3: Cross multiply
    153,961.02x = 212,447.34 × 85,981.68
  4. Step 4: Simplify right side
    153,961.02x = 18,266,579,204.73
  5. Step 5: Solve for x
    x = 18,266,579,204.73/153,961.02
  6. Step 6: Final answer
    x = 118,644.18

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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.