Home / 151,689.21-209,322.24-83,706.03

Finding the Fourth Proportional to 151,689.21, 209,322.24 and 83,706.03

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Solution

The fourth proportional to 151,689.21, 209,322.24 and 83,706.03 is: 115,509.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,689.21 : 209,322.24 = 83,706.03 : x
  2. Step 2: Convert to fraction form
    151,689.21/209,322.24 = 83,706.03/x
  3. Step 3: Cross multiply
    151,689.21x = 209,322.24 × 83,706.03
  4. Step 4: Simplify right side
    151,689.21x = 17,521,533,701.11
  5. Step 5: Solve for x
    x = 17,521,533,701.11/151,689.21
  6. Step 6: Final answer
    x = 115,509.43

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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.