Home / 216,985.65-299,475.67-129,765.05

Finding the Fourth Proportional to 216,985.65, 299,475.67 and 129,765.05

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Solution

The fourth proportional to 216,985.65, 299,475.67 and 129,765.05 is: 179,096.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,985.65 : 299,475.67 = 129,765.05 : x
  2. Step 2: Convert to fraction form
    216,985.65/299,475.67 = 129,765.05/x
  3. Step 3: Cross multiply
    216,985.65x = 299,475.67 × 129,765.05
  4. Step 4: Simplify right side
    216,985.65x = 38,861,475,291.33
  5. Step 5: Solve for x
    x = 38,861,475,291.33/216,985.65
  6. Step 6: Final answer
    x = 179,096.98

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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.