Home / 131,430.10-197,145.15-115,878.10

Finding the Fourth Proportional to 131,430.10, 197,145.15 and 115,878.10

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Solution

The fourth proportional to 131,430.10, 197,145.15 and 115,878.10 is: 173,817.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,430.10 : 197,145.15 = 115,878.10 : x
  2. Step 2: Convert to fraction form
    131,430.10/197,145.15 = 115,878.10/x
  3. Step 3: Cross multiply
    131,430.10x = 197,145.15 × 115,878.10
  4. Step 4: Simplify right side
    131,430.10x = 22,844,805,406.22
  5. Step 5: Solve for x
    x = 22,844,805,406.22/131,430.10
  6. Step 6: Final answer
    x = 173,817.15

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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.