Home / 149,259.51-205,979.76-85,603.23

Finding the Fourth Proportional to 149,259.51, 205,979.76 and 85,603.23

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Solution

The fourth proportional to 149,259.51, 205,979.76 and 85,603.23 is: 118,133.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,259.51 : 205,979.76 = 85,603.23 : x
  2. Step 2: Convert to fraction form
    149,259.51/205,979.76 = 85,603.23/x
  3. Step 3: Cross multiply
    149,259.51x = 205,979.76 × 85,603.23
  4. Step 4: Simplify right side
    149,259.51x = 17,632,532,770.62
  5. Step 5: Solve for x
    x = 17,632,532,770.62/149,259.51
  6. Step 6: Final answer
    x = 118,133.40

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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.