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Finding the Fourth Proportional to 101,370.32, 139,878.60 and 58,938.32

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Solution

The fourth proportional to 101,370.32, 139,878.60 and 58,938.32 is: 81,327.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,370.32 : 139,878.60 = 58,938.32 : x
  2. Step 2: Convert to fraction form
    101,370.32/139,878.60 = 58,938.32/x
  3. Step 3: Cross multiply
    101,370.32x = 139,878.60 × 58,938.32
  4. Step 4: Simplify right side
    101,370.32x = 8,244,209,687.95
  5. Step 5: Solve for x
    x = 8,244,209,687.95/101,370.32
  6. Step 6: Final answer
    x = 81,327.65

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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.