Home / 101,120.55-139,574.12-58,692.75

Finding the Fourth Proportional to 101,120.55, 139,574.12 and 58,692.75

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Solution

The fourth proportional to 101,120.55, 139,574.12 and 58,692.75 is: 81,012.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,120.55 : 139,574.12 = 58,692.75 : x
  2. Step 2: Convert to fraction form
    101,120.55/139,574.12 = 58,692.75/x
  3. Step 3: Cross multiply
    101,120.55x = 139,574.12 × 58,692.75
  4. Step 4: Simplify right side
    101,120.55x = 8,191,988,638.17
  5. Step 5: Solve for x
    x = 8,191,988,638.17/101,120.55
  6. Step 6: Final answer
    x = 81,012.11

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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.