Home / 111,021.41-153,205.75-63,290.14

Finding the Fourth Proportional to 111,021.41, 153,205.75 and 63,290.14

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Solution

The fourth proportional to 111,021.41, 153,205.75 and 63,290.14 is: 87,338.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,021.41 : 153,205.75 = 63,290.14 : x
  2. Step 2: Convert to fraction form
    111,021.41/153,205.75 = 63,290.14/x
  3. Step 3: Cross multiply
    111,021.41x = 153,205.75 × 63,290.14
  4. Step 4: Simplify right side
    111,021.41x = 9,696,413,366.31
  5. Step 5: Solve for x
    x = 9,696,413,366.31/111,021.41
  6. Step 6: Final answer
    x = 87,338.23

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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.