Home / 102,515.10-153,772.65-28,643.10

Finding the Fourth Proportional to 102,515.10, 153,772.65 and 28,643.10

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Solution

The fourth proportional to 102,515.10, 153,772.65 and 28,643.10 is: 42,964.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,515.10 : 153,772.65 = 28,643.10 : x
  2. Step 2: Convert to fraction form
    102,515.10/153,772.65 = 28,643.10/x
  3. Step 3: Cross multiply
    102,515.10x = 153,772.65 × 28,643.10
  4. Step 4: Simplify right side
    102,515.10x = 4,404,525,391.22
  5. Step 5: Solve for x
    x = 4,404,525,391.22/102,515.10
  6. Step 6: Final answer
    x = 42,964.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.