Home / 103,039.73-155,354.21-102,400.03

Finding the Fourth Proportional to 103,039.73, 155,354.21 and 102,400.03

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Solution

The fourth proportional to 103,039.73, 155,354.21 and 102,400.03 is: 154,389.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,039.73 : 155,354.21 = 102,400.03 : x
  2. Step 2: Convert to fraction form
    103,039.73/155,354.21 = 102,400.03/x
  3. Step 3: Cross multiply
    103,039.73x = 155,354.21 × 102,400.03
  4. Step 4: Simplify right side
    103,039.73x = 15,908,276,118.82
  5. Step 5: Solve for x
    x = 15,908,276,118.82/103,039.73
  6. Step 6: Final answer
    x = 154,389.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.