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Finding the Fourth Proportional to 191,756.64, 287,643.60 and 73,397.28

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Solution

The fourth proportional to 191,756.64, 287,643.60 and 73,397.28 is: 110,099.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,756.64 : 287,643.60 = 73,397.28 : x
  2. Step 2: Convert to fraction form
    191,756.64/287,643.60 = 73,397.28/x
  3. Step 3: Cross multiply
    191,756.64x = 287,643.60 × 73,397.28
  4. Step 4: Simplify right side
    191,756.64x = 21,112,257,849.41
  5. Step 5: Solve for x
    x = 21,112,257,849.41/191,756.64
  6. Step 6: Final answer
    x = 110,099.23

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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.