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Finding the Fourth Proportional to 191,119, 286,678.52 and 66,460

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Solution

The fourth proportional to 191,119, 286,678.52 and 66,460 is: 99,690.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,119 : 286,678.52 = 66,460 : x
  2. Step 2: Convert to fraction form
    191,119/286,678.52 = 66,460/x
  3. Step 3: Cross multiply
    191,119x = 286,678.52 × 66,460
  4. Step 4: Simplify right side
    191,119x = 19,052,654,439.20
  5. Step 5: Solve for x
    x = 19,052,654,439.20/191,119
  6. Step 6: Final answer
    x = 99,690.01

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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.