Home / 103,297.87-142,635.09-84,180.45

Finding the Fourth Proportional to 103,297.87, 142,635.09 and 84,180.45

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Solution

The fourth proportional to 103,297.87, 142,635.09 and 84,180.45 is: 116,237.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,297.87 : 142,635.09 = 84,180.45 : x
  2. Step 2: Convert to fraction form
    103,297.87/142,635.09 = 84,180.45/x
  3. Step 3: Cross multiply
    103,297.87x = 142,635.09 × 84,180.45
  4. Step 4: Simplify right side
    103,297.87x = 12,007,086,061.99
  5. Step 5: Solve for x
    x = 12,007,086,061.99/103,297.87
  6. Step 6: Final answer
    x = 116,237.50

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1.5x scale

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.