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Finding the Fourth Proportional to 153,958.76, 212,450.96 and 85,970.42

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Solution

The fourth proportional to 153,958.76, 212,450.96 and 85,970.42 is: 118,632.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,958.76 : 212,450.96 = 85,970.42 : x
  2. Step 2: Convert to fraction form
    153,958.76/212,450.96 = 85,970.42/x
  3. Step 3: Cross multiply
    153,958.76x = 212,450.96 × 85,970.42
  4. Step 4: Simplify right side
    153,958.76x = 18,264,497,413.27
  5. Step 5: Solve for x
    x = 18,264,497,413.27/153,958.76
  6. Step 6: Final answer
    x = 118,632.41

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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.