Home / 115,679.89-159,637.35-64,692.70

Finding the Fourth Proportional to 115,679.89, 159,637.35 and 64,692.70

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Solution

The fourth proportional to 115,679.89, 159,637.35 and 64,692.70 is: 89,275.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,679.89 : 159,637.35 = 64,692.70 : x
  2. Step 2: Convert to fraction form
    115,679.89/159,637.35 = 64,692.70/x
  3. Step 3: Cross multiply
    115,679.89x = 159,637.35 × 64,692.70
  4. Step 4: Simplify right side
    115,679.89x = 10,327,371,192.35
  5. Step 5: Solve for x
    x = 10,327,371,192.35/115,679.89
  6. Step 6: Final answer
    x = 89,275.42

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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.