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Finding the Fourth Proportional to 191,988.71, 287,749.59 and 135,845.00

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Solution

The fourth proportional to 191,988.71, 287,749.59 and 135,845.00 is: 203,602.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,988.71 : 287,749.59 = 135,845.00 : x
  2. Step 2: Convert to fraction form
    191,988.71/287,749.59 = 135,845.00/x
  3. Step 3: Cross multiply
    191,988.71x = 287,749.59 × 135,845.00
  4. Step 4: Simplify right side
    191,988.71x = 39,089,342,566.51
  5. Step 5: Solve for x
    x = 39,089,342,566.51/191,988.71
  6. Step 6: Final answer
    x = 203,602.30

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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.