Home / 281,045.10-387,851.46-153,720.68

Finding the Fourth Proportional to 281,045.10, 387,851.46 and 153,720.68

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Solution

The fourth proportional to 281,045.10, 387,851.46 and 153,720.68 is: 212,139.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,045.10 : 387,851.46 = 153,720.68 : x
  2. Step 2: Convert to fraction form
    281,045.10/387,851.46 = 153,720.68/x
  3. Step 3: Cross multiply
    281,045.10x = 387,851.46 × 153,720.68
  4. Step 4: Simplify right side
    281,045.10x = 59,620,790,170.19
  5. Step 5: Solve for x
    x = 59,620,790,170.19/281,045.10
  6. Step 6: Final answer
    x = 212,139.58

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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.