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Finding the Fourth Proportional to 124,408, 171,705.54 and 73,417.60

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Solution

The fourth proportional to 124,408, 171,705.54 and 73,417.60 is: 101,329.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,408 : 171,705.54 = 73,417.60 : x
  2. Step 2: Convert to fraction form
    124,408/171,705.54 = 73,417.60/x
  3. Step 3: Cross multiply
    124,408x = 171,705.54 × 73,417.60
  4. Step 4: Simplify right side
    124,408x = 12,606,208,653.50
  5. Step 5: Solve for x
    x = 12,606,208,653.50/124,408
  6. Step 6: Final answer
    x = 101,329.57

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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.