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Finding the Fourth Proportional to 113,395.39, 156,485.77 and 62,411.81

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Solution

The fourth proportional to 113,395.39, 156,485.77 and 62,411.81 is: 86,128.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,395.39 : 156,485.77 = 62,411.81 : x
  2. Step 2: Convert to fraction form
    113,395.39/156,485.77 = 62,411.81/x
  3. Step 3: Cross multiply
    113,395.39x = 156,485.77 × 62,411.81
  4. Step 4: Simplify right side
    113,395.39x = 9,766,559,206.49
  5. Step 5: Solve for x
    x = 9,766,559,206.49/113,395.39
  6. Step 6: Final answer
    x = 86,128.36

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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.