Home / 91,094.04-136,692.90-72,742.68

Finding the Fourth Proportional to 91,094.04, 136,692.90 and 72,742.68

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Solution

The fourth proportional to 91,094.04, 136,692.90 and 72,742.68 is: 109,155.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,094.04 : 136,692.90 = 72,742.68 : x
  2. Step 2: Convert to fraction form
    91,094.04/136,692.90 = 72,742.68/x
  3. Step 3: Cross multiply
    91,094.04x = 136,692.90 × 72,742.68
  4. Step 4: Simplify right side
    91,094.04x = 9,943,407,882.97
  5. Step 5: Solve for x
    x = 9,943,407,882.97/91,094.04
  6. Step 6: Final answer
    x = 109,155.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.