Home / 210,972.84-291,142.92-115,485.60

Finding the Fourth Proportional to 210,972.84, 291,142.92 and 115,485.60

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Solution

The fourth proportional to 210,972.84, 291,142.92 and 115,485.60 is: 159,370.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,972.84 : 291,142.92 = 115,485.60 : x
  2. Step 2: Convert to fraction form
    210,972.84/291,142.92 = 115,485.60/x
  3. Step 3: Cross multiply
    210,972.84x = 291,142.92 × 115,485.60
  4. Step 4: Simplify right side
    210,972.84x = 33,622,814,801.95
  5. Step 5: Solve for x
    x = 33,622,814,801.95/210,972.84
  6. Step 6: Final answer
    x = 159,370.35

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1.5x scale

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.