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Finding the Fourth Proportional to 159,475, 220,085.58 and 87,855.16

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Solution

The fourth proportional to 159,475, 220,085.58 and 87,855.16 is: 121,245.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,475 : 220,085.58 = 87,855.16 : x
  2. Step 2: Convert to fraction form
    159,475/220,085.58 = 87,855.16/x
  3. Step 3: Cross multiply
    159,475x = 220,085.58 × 87,855.16
  4. Step 4: Simplify right side
    159,475x = 19,335,653,844.59
  5. Step 5: Solve for x
    x = 19,335,653,844.59/159,475
  6. Step 6: Final answer
    x = 121,245.67

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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.