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Finding the Fourth Proportional to 124,394.88, 171,669.56 and 70,689

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Solution

The fourth proportional to 124,394.88, 171,669.56 and 70,689 is: 97,553.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,394.88 : 171,669.56 = 70,689 : x
  2. Step 2: Convert to fraction form
    124,394.88/171,669.56 = 70,689/x
  3. Step 3: Cross multiply
    124,394.88x = 171,669.56 × 70,689
  4. Step 4: Simplify right side
    124,394.88x = 12,135,149,526.84
  5. Step 5: Solve for x
    x = 12,135,149,526.84/124,394.88
  6. Step 6: Final answer
    x = 97,553.45

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1.5x scale

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.