Home / 102,647.40-153,971.10-91,242.60

Finding the Fourth Proportional to 102,647.40, 153,971.10 and 91,242.60

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Solution

The fourth proportional to 102,647.40, 153,971.10 and 91,242.60 is: 136,863.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,647.40 : 153,971.10 = 91,242.60 : x
  2. Step 2: Convert to fraction form
    102,647.40/153,971.10 = 91,242.60/x
  3. Step 3: Cross multiply
    102,647.40x = 153,971.10 × 91,242.60
  4. Step 4: Simplify right side
    102,647.40x = 14,048,723,488.86
  5. Step 5: Solve for x
    x = 14,048,723,488.86/102,647.40
  6. Step 6: Final answer
    x = 136,863.90

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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.