Home / 102,599.10-153,548.55-85,977.90

Finding the Fourth Proportional to 102,599.10, 153,548.55 and 85,977.90

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Solution

The fourth proportional to 102,599.10, 153,548.55 and 85,977.90 is: 128,673.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,599.10 : 153,548.55 = 85,977.90 : x
  2. Step 2: Convert to fraction form
    102,599.10/153,548.55 = 85,977.90/x
  3. Step 3: Cross multiply
    102,599.10x = 153,548.55 × 85,977.90
  4. Step 4: Simplify right side
    102,599.10x = 13,201,781,877.05
  5. Step 5: Solve for x
    x = 13,201,781,877.05/102,599.10
  6. Step 6: Final answer
    x = 128,673.47

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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.