Home / 218,621.13-301,718.67-127,971.60

Finding the Fourth Proportional to 218,621.13, 301,718.67 and 127,971.60

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Solution

The fourth proportional to 218,621.13, 301,718.67 and 127,971.60 is: 176,613.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,621.13 : 301,718.67 = 127,971.60 : x
  2. Step 2: Convert to fraction form
    218,621.13/301,718.67 = 127,971.60/x
  3. Step 3: Cross multiply
    218,621.13x = 301,718.67 × 127,971.60
  4. Step 4: Simplify right side
    218,621.13x = 38,611,420,949.77
  5. Step 5: Solve for x
    x = 38,611,420,949.77/218,621.13
  6. Step 6: Final answer
    x = 176,613.40

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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.