Home / 78,558.12-116,948.81-78,091.16

Finding the Fourth Proportional to 78,558.12, 116,948.81 and 78,091.16

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Solution

The fourth proportional to 78,558.12, 116,948.81 and 78,091.16 is: 116,253.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,558.12 : 116,948.81 = 78,091.16 : x
  2. Step 2: Convert to fraction form
    78,558.12/116,948.81 = 78,091.16/x
  3. Step 3: Cross multiply
    78,558.12x = 116,948.81 × 78,091.16
  4. Step 4: Simplify right side
    78,558.12x = 9,132,667,844.00
  5. Step 5: Solve for x
    x = 9,132,667,844.00/78,558.12
  6. Step 6: Final answer
    x = 116,253.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.