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Finding the Fourth Proportional to 230,972, 318,741.52 and 124,988

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Solution

The fourth proportional to 230,972, 318,741.52 and 124,988 is: 172,483.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,972 : 318,741.52 = 124,988 : x
  2. Step 2: Convert to fraction form
    230,972/318,741.52 = 124,988/x
  3. Step 3: Cross multiply
    230,972x = 318,741.52 × 124,988
  4. Step 4: Simplify right side
    230,972x = 39,838,865,101.76
  5. Step 5: Solve for x
    x = 39,838,865,101.76/230,972
  6. Step 6: Final answer
    x = 172,483.53

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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.