Home / 191,439.03-287,189.64-65,090.55

Finding the Fourth Proportional to 191,439.03, 287,189.64 and 65,090.55

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Solution

The fourth proportional to 191,439.03, 287,189.64 and 65,090.55 is: 97,646.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,439.03 : 287,189.64 = 65,090.55 : x
  2. Step 2: Convert to fraction form
    191,439.03/287,189.64 = 65,090.55/x
  3. Step 3: Cross multiply
    191,439.03x = 287,189.64 × 65,090.55
  4. Step 4: Simplify right side
    191,439.03x = 18,693,331,621.90
  5. Step 5: Solve for x
    x = 18,693,331,621.90/191,439.03
  6. Step 6: Final answer
    x = 97,646.40

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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.