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Finding the Fourth Proportional to 113,740.66, 156,946.98 and 65,987.11

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Solution

The fourth proportional to 113,740.66, 156,946.98 and 65,987.11 is: 91,053.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,740.66 : 156,946.98 = 65,987.11 : x
  2. Step 2: Convert to fraction form
    113,740.66/156,946.98 = 65,987.11/x
  3. Step 3: Cross multiply
    113,740.66x = 156,946.98 × 65,987.11
  4. Step 4: Simplify right side
    113,740.66x = 10,356,477,633.43
  5. Step 5: Solve for x
    x = 10,356,477,633.43/113,740.66
  6. Step 6: Final answer
    x = 91,053.43

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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.