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Finding the Fourth Proportional to 121,457.76, 167,626.32 and 71,156.76

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Solution

The fourth proportional to 121,457.76, 167,626.32 and 71,156.76 is: 98,204.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,457.76 : 167,626.32 = 71,156.76 : x
  2. Step 2: Convert to fraction form
    121,457.76/167,626.32 = 71,156.76/x
  3. Step 3: Cross multiply
    121,457.76x = 167,626.32 × 71,156.76
  4. Step 4: Simplify right side
    121,457.76x = 11,927,745,821.92
  5. Step 5: Solve for x
    x = 11,927,745,821.92/121,457.76
  6. Step 6: Final answer
    x = 98,204.89

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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.