Home / 216,928.60-299,359.16-121,436.08

Finding the Fourth Proportional to 216,928.60, 299,359.16 and 121,436.08

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Solution

The fourth proportional to 216,928.60, 299,359.16 and 121,436.08 is: 167,580.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,928.60 : 299,359.16 = 121,436.08 : x
  2. Step 2: Convert to fraction form
    216,928.60/299,359.16 = 121,436.08/x
  3. Step 3: Cross multiply
    216,928.60x = 299,359.16 × 121,436.08
  4. Step 4: Simplify right side
    216,928.60x = 36,353,002,902.49
  5. Step 5: Solve for x
    x = 36,353,002,902.49/216,928.60
  6. Step 6: Final answer
    x = 167,580.50

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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.