Home / 210,788.40-290,895.48-120,158.04

Finding the Fourth Proportional to 210,788.40, 290,895.48 and 120,158.04

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Solution

The fourth proportional to 210,788.40, 290,895.48 and 120,158.04 is: 165,822.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,788.40 : 290,895.48 = 120,158.04 : x
  2. Step 2: Convert to fraction form
    210,788.40/290,895.48 = 120,158.04/x
  3. Step 3: Cross multiply
    210,788.40x = 290,895.48 × 120,158.04
  4. Step 4: Simplify right side
    210,788.40x = 34,953,430,721.66
  5. Step 5: Solve for x
    x = 34,953,430,721.66/210,788.40
  6. Step 6: Final answer
    x = 165,822.36

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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.