Home / 102,021.57-153,008.06-42,858.39

Finding the Fourth Proportional to 102,021.57, 153,008.06 and 42,858.39

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Solution

The fourth proportional to 102,021.57, 153,008.06 and 42,858.39 is: 64,277.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,021.57 : 153,008.06 = 42,858.39 : x
  2. Step 2: Convert to fraction form
    102,021.57/153,008.06 = 42,858.39/x
  3. Step 3: Cross multiply
    102,021.57x = 153,008.06 × 42,858.39
  4. Step 4: Simplify right side
    102,021.57x = 6,557,678,894.33
  5. Step 5: Solve for x
    x = 6,557,678,894.33/102,021.57
  6. Step 6: Final answer
    x = 64,277.38

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1.5x scale

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.