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Finding the Fourth Proportional to 191,646.90, 287,579.70 and 73,403.10

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Solution

The fourth proportional to 191,646.90, 287,579.70 and 73,403.10 is: 110,146.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,646.90 : 287,579.70 = 73,403.10 : x
  2. Step 2: Convert to fraction form
    191,646.90/287,579.70 = 73,403.10/x
  3. Step 3: Cross multiply
    191,646.90x = 287,579.70 × 73,403.10
  4. Step 4: Simplify right side
    191,646.90x = 21,109,241,477.07
  5. Step 5: Solve for x
    x = 21,109,241,477.07/191,646.90
  6. Step 6: Final answer
    x = 110,146.53

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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.