Home / 103,750.10-155,406.45-92,669.30

Finding the Fourth Proportional to 103,750.10, 155,406.45 and 92,669.30

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Solution

The fourth proportional to 103,750.10, 155,406.45 and 92,669.30 is: 138,808.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,750.10 : 155,406.45 = 92,669.30 : x
  2. Step 2: Convert to fraction form
    103,750.10/155,406.45 = 92,669.30/x
  3. Step 3: Cross multiply
    103,750.10x = 155,406.45 × 92,669.30
  4. Step 4: Simplify right side
    103,750.10x = 14,401,406,936.99
  5. Step 5: Solve for x
    x = 14,401,406,936.99/103,750.10
  6. Step 6: Final answer
    x = 138,808.61

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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.