Home / 151,040.13-208,435.08-86,530.25

Finding the Fourth Proportional to 151,040.13, 208,435.08 and 86,530.25

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Solution

The fourth proportional to 151,040.13, 208,435.08 and 86,530.25 is: 119,411.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,040.13 : 208,435.08 = 86,530.25 : x
  2. Step 2: Convert to fraction form
    151,040.13/208,435.08 = 86,530.25/x
  3. Step 3: Cross multiply
    151,040.13x = 208,435.08 × 86,530.25
  4. Step 4: Simplify right side
    151,040.13x = 18,035,940,426.75
  5. Step 5: Solve for x
    x = 18,035,940,426.75/151,040.13
  6. Step 6: Final answer
    x = 119,411.58

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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.