Home / 138,516.66-191,153.07-74,854.35

Finding the Fourth Proportional to 138,516.66, 191,153.07 and 74,854.35

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Solution

The fourth proportional to 138,516.66, 191,153.07 and 74,854.35 is: 103,299.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,516.66 : 191,153.07 = 74,854.35 : x
  2. Step 2: Convert to fraction form
    138,516.66/191,153.07 = 74,854.35/x
  3. Step 3: Cross multiply
    138,516.66x = 191,153.07 × 74,854.35
  4. Step 4: Simplify right side
    138,516.66x = 14,308,638,805.35
  5. Step 5: Solve for x
    x = 14,308,638,805.35/138,516.66
  6. Step 6: Final answer
    x = 103,299.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.