Home / 103,407.08-154,818.48-84,318.56

Finding the Fourth Proportional to 103,407.08, 154,818.48 and 84,318.56

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Solution

The fourth proportional to 103,407.08, 154,818.48 and 84,318.56 is: 126,239.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,407.08 : 154,818.48 = 84,318.56 : x
  2. Step 2: Convert to fraction form
    103,407.08/154,818.48 = 84,318.56/x
  3. Step 3: Cross multiply
    103,407.08x = 154,818.48 × 84,318.56
  4. Step 4: Simplify right side
    103,407.08x = 13,054,071,294.99
  5. Step 5: Solve for x
    x = 13,054,071,294.99/103,407.08
  6. Step 6: Final answer
    x = 126,239.63

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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.