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Finding the Fourth Proportional to 124,130.91, 186,196.08 and 45,212.88

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Solution

The fourth proportional to 124,130.91, 186,196.08 and 45,212.88 is: 67,819.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,130.91 : 186,196.08 = 45,212.88 : x
  2. Step 2: Convert to fraction form
    124,130.91/186,196.08 = 45,212.88/x
  3. Step 3: Cross multiply
    124,130.91x = 186,196.08 × 45,212.88
  4. Step 4: Simplify right side
    124,130.91x = 8,418,461,021.51
  5. Step 5: Solve for x
    x = 8,418,461,021.51/124,130.91
  6. Step 6: Final answer
    x = 67,819.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.