Home / 216,711.18-299,045.13-121,199.40

Finding the Fourth Proportional to 216,711.18, 299,045.13 and 121,199.40

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Solution

The fourth proportional to 216,711.18, 299,045.13 and 121,199.40 is: 167,246.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,711.18 : 299,045.13 = 121,199.40 : x
  2. Step 2: Convert to fraction form
    216,711.18/299,045.13 = 121,199.40/x
  3. Step 3: Cross multiply
    216,711.18x = 299,045.13 × 121,199.40
  4. Step 4: Simplify right side
    216,711.18x = 36,244,090,328.92
  5. Step 5: Solve for x
    x = 36,244,090,328.92/216,711.18
  6. Step 6: Final answer
    x = 167,246.06

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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.