Home / 122,031.04-168,413.28-68,315.20

Finding the Fourth Proportional to 122,031.04, 168,413.28 and 68,315.20

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Solution

The fourth proportional to 122,031.04, 168,413.28 and 68,315.20 is: 94,280.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,031.04 : 168,413.28 = 68,315.20 : x
  2. Step 2: Convert to fraction form
    122,031.04/168,413.28 = 68,315.20/x
  3. Step 3: Cross multiply
    122,031.04x = 168,413.28 × 68,315.20
  4. Step 4: Simplify right side
    122,031.04x = 11,505,186,905.86
  5. Step 5: Solve for x
    x = 11,505,186,905.86/122,031.04
  6. Step 6: Final answer
    x = 94,280.82

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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.