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Finding the Fourth Proportional to 191,467.54, 287,332.53 and 66,808.54

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Solution

The fourth proportional to 191,467.54, 287,332.53 and 66,808.54 is: 100,258.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,467.54 : 287,332.53 = 66,808.54 : x
  2. Step 2: Convert to fraction form
    191,467.54/287,332.53 = 66,808.54/x
  3. Step 3: Cross multiply
    191,467.54x = 287,332.53 × 66,808.54
  4. Step 4: Simplify right side
    191,467.54x = 19,196,266,823.81
  5. Step 5: Solve for x
    x = 19,196,266,823.81/191,467.54
  6. Step 6: Final answer
    x = 100,258.60

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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.