Home / 113,288.81-156,361.19-86,383.26

Finding the Fourth Proportional to 113,288.81, 156,361.19 and 86,383.26

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Solution

The fourth proportional to 113,288.81, 156,361.19 and 86,383.26 is: 119,226.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,288.81 : 156,361.19 = 86,383.26 : x
  2. Step 2: Convert to fraction form
    113,288.81/156,361.19 = 86,383.26/x
  3. Step 3: Cross multiply
    113,288.81x = 156,361.19 × 86,383.26
  4. Step 4: Simplify right side
    113,288.81x = 13,506,988,897.76
  5. Step 5: Solve for x
    x = 13,506,988,897.76/113,288.81
  6. Step 6: Final answer
    x = 119,226.16

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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.