Home / 109,413.40-164,120.10-89,973.40

Finding the Fourth Proportional to 109,413.40, 164,120.10 and 89,973.40

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Solution

The fourth proportional to 109,413.40, 164,120.10 and 89,973.40 is: 134,960.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,413.40 : 164,120.10 = 89,973.40 : x
  2. Step 2: Convert to fraction form
    109,413.40/164,120.10 = 89,973.40/x
  3. Step 3: Cross multiply
    109,413.40x = 164,120.10 × 89,973.40
  4. Step 4: Simplify right side
    109,413.40x = 14,766,443,405.34
  5. Step 5: Solve for x
    x = 14,766,443,405.34/109,413.40
  6. Step 6: Final answer
    x = 134,960.10

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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.