Home / 153,731.70-212,155.02-89,196.06

Finding the Fourth Proportional to 153,731.70, 212,155.02 and 89,196.06

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Solution

The fourth proportional to 153,731.70, 212,155.02 and 89,196.06 is: 123,093.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,731.70 : 212,155.02 = 89,196.06 : x
  2. Step 2: Convert to fraction form
    153,731.70/212,155.02 = 89,196.06/x
  3. Step 3: Cross multiply
    153,731.70x = 212,155.02 × 89,196.06
  4. Step 4: Simplify right side
    153,731.70x = 18,923,391,893.22
  5. Step 5: Solve for x
    x = 18,923,391,893.22/153,731.70
  6. Step 6: Final answer
    x = 123,093.62

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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.