Home / 103,523.40-155,285.10-72,030.60

Finding the Fourth Proportional to 103,523.40, 155,285.10 and 72,030.60

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Solution

The fourth proportional to 103,523.40, 155,285.10 and 72,030.60 is: 108,045.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,523.40 : 155,285.10 = 72,030.60 : x
  2. Step 2: Convert to fraction form
    103,523.40/155,285.10 = 72,030.60/x
  3. Step 3: Cross multiply
    103,523.40x = 155,285.10 × 72,030.60
  4. Step 4: Simplify right side
    103,523.40x = 11,185,278,924.06
  5. Step 5: Solve for x
    x = 11,185,278,924.06/103,523.40
  6. Step 6: Final answer
    x = 108,045.90

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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.