Home / 133,249.03-183,878.16-72,821.68

Finding the Fourth Proportional to 133,249.03, 183,878.16 and 72,821.68

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Solution

The fourth proportional to 133,249.03, 183,878.16 and 72,821.68 is: 100,490.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,249.03 : 183,878.16 = 72,821.68 : x
  2. Step 2: Convert to fraction form
    133,249.03/183,878.16 = 72,821.68/x
  3. Step 3: Cross multiply
    133,249.03x = 183,878.16 × 72,821.68
  4. Step 4: Simplify right side
    133,249.03x = 13,390,316,526.51
  5. Step 5: Solve for x
    x = 13,390,316,526.51/133,249.03
  6. Step 6: Final answer
    x = 100,490.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.