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Finding the Fourth Proportional to 122,158.96, 168,567.95 and 68,432.58

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Solution

The fourth proportional to 122,158.96, 168,567.95 and 68,432.58 is: 94,430.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,158.96 : 168,567.95 = 68,432.58 : x
  2. Step 2: Convert to fraction form
    122,158.96/168,567.95 = 68,432.58/x
  3. Step 3: Cross multiply
    122,158.96x = 168,567.95 × 68,432.58
  4. Step 4: Simplify right side
    122,158.96x = 11,535,539,894.89
  5. Step 5: Solve for x
    x = 11,535,539,894.89/122,158.96
  6. Step 6: Final answer
    x = 94,430.57

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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.