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Finding the Fourth Proportional to 159,904.99, 220,659.37 and 87,293.40

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Solution

The fourth proportional to 159,904.99, 220,659.37 and 87,293.40 is: 120,459.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,904.99 : 220,659.37 = 87,293.40 : x
  2. Step 2: Convert to fraction form
    159,904.99/220,659.37 = 87,293.40/x
  3. Step 3: Cross multiply
    159,904.99x = 220,659.37 × 87,293.40
  4. Step 4: Simplify right side
    159,904.99x = 19,262,106,649.16
  5. Step 5: Solve for x
    x = 19,262,106,649.16/159,904.99
  6. Step 6: Final answer
    x = 120,459.70

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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.