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Finding the Fourth Proportional to 191,551.80, 286,938.90 and 108,348.60

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Solution

The fourth proportional to 191,551.80, 286,938.90 and 108,348.60 is: 162,302.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,551.80 : 286,938.90 = 108,348.60 : x
  2. Step 2: Convert to fraction form
    191,551.80/286,938.90 = 108,348.60/x
  3. Step 3: Cross multiply
    191,551.80x = 286,938.90 × 108,348.60
  4. Step 4: Simplify right side
    191,551.80x = 31,089,428,100.54
  5. Step 5: Solve for x
    x = 31,089,428,100.54/191,551.80
  6. Step 6: Final answer
    x = 162,302.98

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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.