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Finding the Fourth Proportional to 115,938.10, 162,779.90 and 115,938.10

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Solution

The fourth proportional to 115,938.10, 162,779.90 and 115,938.10 is: 162,779.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,938.10 : 162,779.90 = 115,938.10 : x
  2. Step 2: Convert to fraction form
    115,938.10/162,779.90 = 115,938.10/x
  3. Step 3: Cross multiply
    115,938.10x = 162,779.90 × 115,938.10
  4. Step 4: Simplify right side
    115,938.10x = 18,872,392,324.19
  5. Step 5: Solve for x
    x = 18,872,392,324.19/115,938.10
  6. Step 6: Final answer
    x = 162,779.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.