Home / 103,498.20-155,125.80-102,390.12

Finding the Fourth Proportional to 103,498.20, 155,125.80 and 102,390.12

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Solution

The fourth proportional to 103,498.20, 155,125.80 and 102,390.12 is: 153,464.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,498.20 : 155,125.80 = 102,390.12 : x
  2. Step 2: Convert to fraction form
    103,498.20/155,125.80 = 102,390.12/x
  3. Step 3: Cross multiply
    103,498.20x = 155,125.80 × 102,390.12
  4. Step 4: Simplify right side
    103,498.20x = 15,883,349,277.10
  5. Step 5: Solve for x
    x = 15,883,349,277.10/103,498.20
  6. Step 6: Final answer
    x = 153,464.98

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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.