Home / 102,122.20-153,308.10-57,779.80

Finding the Fourth Proportional to 102,122.20, 153,308.10 and 57,779.80

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Solution

The fourth proportional to 102,122.20, 153,308.10 and 57,779.80 is: 86,740.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,122.20 : 153,308.10 = 57,779.80 : x
  2. Step 2: Convert to fraction form
    102,122.20/153,308.10 = 57,779.80/x
  3. Step 3: Cross multiply
    102,122.20x = 153,308.10 × 57,779.80
  4. Step 4: Simplify right side
    102,122.20x = 8,858,111,356.38
  5. Step 5: Solve for x
    x = 8,858,111,356.38/102,122.20
  6. Step 6: Final answer
    x = 86,740.31

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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.