Home / 151,439.36-208,987.14-86,903.46

Finding the Fourth Proportional to 151,439.36, 208,987.14 and 86,903.46

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Solution

The fourth proportional to 151,439.36, 208,987.14 and 86,903.46 is: 119,927.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,439.36 : 208,987.14 = 86,903.46 : x
  2. Step 2: Convert to fraction form
    151,439.36/208,987.14 = 86,903.46/x
  3. Step 3: Cross multiply
    151,439.36x = 208,987.14 × 86,903.46
  4. Step 4: Simplify right side
    151,439.36x = 18,161,705,561.50
  5. Step 5: Solve for x
    x = 18,161,705,561.50/151,439.36
  6. Step 6: Final answer
    x = 119,927.25

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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.