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Finding the Fourth Proportional to 122,313, 168,792.24 and 71,360.76

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Solution

The fourth proportional to 122,313, 168,792.24 and 71,360.76 is: 98,478.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,313 : 168,792.24 = 71,360.76 : x
  2. Step 2: Convert to fraction form
    122,313/168,792.24 = 71,360.76/x
  3. Step 3: Cross multiply
    122,313x = 168,792.24 × 71,360.76
  4. Step 4: Simplify right side
    122,313x = 12,045,142,528.50
  5. Step 5: Solve for x
    x = 12,045,142,528.50/122,313
  6. Step 6: Final answer
    x = 98,478.02

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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.