Home / 100,124.74-138,171.64-54,184.35

Finding the Fourth Proportional to 100,124.74, 138,171.64 and 54,184.35

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Solution

The fourth proportional to 100,124.74, 138,171.64 and 54,184.35 is: 74,774.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,124.74 : 138,171.64 = 54,184.35 : x
  2. Step 2: Convert to fraction form
    100,124.74/138,171.64 = 54,184.35/x
  3. Step 3: Cross multiply
    100,124.74x = 138,171.64 × 54,184.35
  4. Step 4: Simplify right side
    100,124.74x = 7,486,740,501.83
  5. Step 5: Solve for x
    x = 7,486,740,501.83/100,124.74
  6. Step 6: Final answer
    x = 74,774.13

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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.