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Finding the Fourth Proportional to 113,272, 156,315.54 and 62,971

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Solution

The fourth proportional to 113,272, 156,315.54 and 62,971 is: 86,900.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,272 : 156,315.54 = 62,971 : x
  2. Step 2: Convert to fraction form
    113,272/156,315.54 = 62,971/x
  3. Step 3: Cross multiply
    113,272x = 156,315.54 × 62,971
  4. Step 4: Simplify right side
    113,272x = 9,843,345,869.34
  5. Step 5: Solve for x
    x = 9,843,345,869.34/113,272
  6. Step 6: Final answer
    x = 86,900.08

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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.