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Finding the Fourth Proportional to 191,004.75, 286,638.75 and 66,345.75

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Solution

The fourth proportional to 191,004.75, 286,638.75 and 66,345.75 is: 99,564.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,004.75 : 286,638.75 = 66,345.75 : x
  2. Step 2: Convert to fraction form
    191,004.75/286,638.75 = 66,345.75/x
  3. Step 3: Cross multiply
    191,004.75x = 286,638.75 × 66,345.75
  4. Step 4: Simplify right side
    191,004.75x = 19,017,262,847.81
  5. Step 5: Solve for x
    x = 19,017,262,847.81/191,004.75
  6. Step 6: Final answer
    x = 99,564.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.