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Finding the Fourth Proportional to 122,153.15, 168,581.58 and 67,718.63

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Solution

The fourth proportional to 122,153.15, 168,581.58 and 67,718.63 is: 93,457.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,153.15 : 168,581.58 = 67,718.63 : x
  2. Step 2: Convert to fraction form
    122,153.15/168,581.58 = 67,718.63/x
  3. Step 3: Cross multiply
    122,153.15x = 168,581.58 × 67,718.63
  4. Step 4: Simplify right side
    122,153.15x = 11,416,113,640.84
  5. Step 5: Solve for x
    x = 11,416,113,640.84/122,153.15
  6. Step 6: Final answer
    x = 93,457.38

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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.