Home / 153,578.07-211,954.95-85,601.25

Finding the Fourth Proportional to 153,578.07, 211,954.95 and 85,601.25

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Solution

The fourth proportional to 153,578.07, 211,954.95 and 85,601.25 is: 118,139.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,578.07 : 211,954.95 = 85,601.25 : x
  2. Step 2: Convert to fraction form
    153,578.07/211,954.95 = 85,601.25/x
  3. Step 3: Cross multiply
    153,578.07x = 211,954.95 × 85,601.25
  4. Step 4: Simplify right side
    153,578.07x = 18,143,608,663.69
  5. Step 5: Solve for x
    x = 18,143,608,663.69/153,578.07
  6. Step 6: Final answer
    x = 118,139.32

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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.