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Finding the Fourth Proportional to 191,015.99, 286,533.50 and 72,696.50

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Solution

The fourth proportional to 191,015.99, 286,533.50 and 72,696.50 is: 109,048.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,015.99 : 286,533.50 = 72,696.50 : x
  2. Step 2: Convert to fraction form
    191,015.99/286,533.50 = 72,696.50/x
  3. Step 3: Cross multiply
    191,015.99x = 286,533.50 × 72,696.50
  4. Step 4: Simplify right side
    191,015.99x = 20,829,982,582.75
  5. Step 5: Solve for x
    x = 20,829,982,582.75/191,015.99
  6. Step 6: Final answer
    x = 109,048.37

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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.