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Finding the Fourth Proportional to 101,403.60, 139,915.08 and 58,940.40

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Solution

The fourth proportional to 101,403.60, 139,915.08 and 58,940.40 is: 81,325.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,403.60 : 139,915.08 = 58,940.40 : x
  2. Step 2: Convert to fraction form
    101,403.60/139,915.08 = 58,940.40/x
  3. Step 3: Cross multiply
    101,403.60x = 139,915.08 × 58,940.40
  4. Step 4: Simplify right side
    101,403.60x = 8,246,650,781.23
  5. Step 5: Solve for x
    x = 8,246,650,781.23/101,403.60
  6. Step 6: Final answer
    x = 81,325.03

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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.