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Finding the Fourth Proportional to 92,211.70, 138,317.55 and 56,782.30

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Solution

The fourth proportional to 92,211.70, 138,317.55 and 56,782.30 is: 85,173.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,211.70 : 138,317.55 = 56,782.30 : x
  2. Step 2: Convert to fraction form
    92,211.70/138,317.55 = 56,782.30/x
  3. Step 3: Cross multiply
    92,211.70x = 138,317.55 × 56,782.30
  4. Step 4: Simplify right side
    92,211.70x = 7,853,988,619.37
  5. Step 5: Solve for x
    x = 7,853,988,619.37/92,211.70
  6. Step 6: Final answer
    x = 85,173.45

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1.5x scale

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.