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Finding the Fourth Proportional to 101,264, 139,742.88 and 58,846.40

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Solution

The fourth proportional to 101,264, 139,742.88 and 58,846.40 is: 81,207.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,264 : 139,742.88 = 58,846.40 : x
  2. Step 2: Convert to fraction form
    101,264/139,742.88 = 58,846.40/x
  3. Step 3: Cross multiply
    101,264x = 139,742.88 × 58,846.40
  4. Step 4: Simplify right side
    101,264x = 8,223,365,413.63
  5. Step 5: Solve for x
    x = 8,223,365,413.63/101,264
  6. Step 6: Final answer
    x = 81,207.20

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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.