Home / 89,985.10-134,977.65-88,672.90

Finding the Fourth Proportional to 89,985.10, 134,977.65 and 88,672.90

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Solution

The fourth proportional to 89,985.10, 134,977.65 and 88,672.90 is: 133,009.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,985.10 : 134,977.65 = 88,672.90 : x
  2. Step 2: Convert to fraction form
    89,985.10/134,977.65 = 88,672.90/x
  3. Step 3: Cross multiply
    89,985.10x = 134,977.65 × 88,672.90
  4. Step 4: Simplify right side
    89,985.10x = 11,968,859,660.69
  5. Step 5: Solve for x
    x = 11,968,859,660.69/89,985.10
  6. Step 6: Final answer
    x = 133,009.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.