Home / 103,475.80-155,129.04-53,570.15

Finding the Fourth Proportional to 103,475.80, 155,129.04 and 53,570.15

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Solution

The fourth proportional to 103,475.80, 155,129.04 and 53,570.15 is: 80,311.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,475.80 : 155,129.04 = 53,570.15 : x
  2. Step 2: Convert to fraction form
    103,475.80/155,129.04 = 53,570.15/x
  3. Step 3: Cross multiply
    103,475.80x = 155,129.04 × 53,570.15
  4. Step 4: Simplify right side
    103,475.80x = 8,310,285,166.51
  5. Step 5: Solve for x
    x = 8,310,285,166.51/103,475.80
  6. Step 6: Final answer
    x = 80,311.39

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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.