Home / 209,987.18-289,769.76-119,330.60

Finding the Fourth Proportional to 209,987.18, 289,769.76 and 119,330.60

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Solution

The fourth proportional to 209,987.18, 289,769.76 and 119,330.60 is: 164,669.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,987.18 : 289,769.76 = 119,330.60 : x
  2. Step 2: Convert to fraction form
    209,987.18/289,769.76 = 119,330.60/x
  3. Step 3: Cross multiply
    209,987.18x = 289,769.76 × 119,330.60
  4. Step 4: Simplify right side
    209,987.18x = 34,578,399,322.66
  5. Step 5: Solve for x
    x = 34,578,399,322.66/209,987.18
  6. Step 6: Final answer
    x = 164,669.10

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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.