Home / 148,822.18-205,410-85,196.68

Finding the Fourth Proportional to 148,822.18, 205,410 and 85,196.68

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Solution

The fourth proportional to 148,822.18, 205,410 and 85,196.68 is: 117,591.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,822.18 : 205,410 = 85,196.68 : x
  2. Step 2: Convert to fraction form
    148,822.18/205,410 = 85,196.68/x
  3. Step 3: Cross multiply
    148,822.18x = 205,410 × 85,196.68
  4. Step 4: Simplify right side
    148,822.18x = 17,500,250,038.80
  5. Step 5: Solve for x
    x = 17,500,250,038.80/148,822.18
  6. Step 6: Final answer
    x = 117,591.68

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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.