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Finding the Fourth Proportional to 124,618.84, 172,035.68 and 76,898.48

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Solution

The fourth proportional to 124,618.84, 172,035.68 and 76,898.48 is: 106,157.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,618.84 : 172,035.68 = 76,898.48 : x
  2. Step 2: Convert to fraction form
    124,618.84/172,035.68 = 76,898.48/x
  3. Step 3: Cross multiply
    124,618.84x = 172,035.68 × 76,898.48
  4. Step 4: Simplify right side
    124,618.84x = 13,229,282,297.77
  5. Step 5: Solve for x
    x = 13,229,282,297.77/124,618.84
  6. Step 6: Final answer
    x = 106,157.96

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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.