Home / 102,021.95-153,008.62-42,858.77

Finding the Fourth Proportional to 102,021.95, 153,008.62 and 42,858.77

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Solution

The fourth proportional to 102,021.95, 153,008.62 and 42,858.77 is: 64,277.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,021.95 : 153,008.62 = 42,858.77 : x
  2. Step 2: Convert to fraction form
    102,021.95/153,008.62 = 42,858.77/x
  3. Step 3: Cross multiply
    102,021.95x = 153,008.62 × 42,858.77
  4. Step 4: Simplify right side
    102,021.95x = 6,557,760,380.41
  5. Step 5: Solve for x
    x = 6,557,760,380.41/102,021.95
  6. Step 6: Final answer
    x = 64,277.94

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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.