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Finding the Fourth Proportional to 113,787, 157,026.06 and 63,486

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Solution

The fourth proportional to 113,787, 157,026.06 and 63,486 is: 87,610.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,787 : 157,026.06 = 63,486 : x
  2. Step 2: Convert to fraction form
    113,787/157,026.06 = 63,486/x
  3. Step 3: Cross multiply
    113,787x = 157,026.06 × 63,486
  4. Step 4: Simplify right side
    113,787x = 9,968,956,445.16
  5. Step 5: Solve for x
    x = 9,968,956,445.16/113,787
  6. Step 6: Final answer
    x = 87,610.68

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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.