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Finding the Fourth Proportional to 190,602.56, 285,929.44 and 72,317.76

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Solution

The fourth proportional to 190,602.56, 285,929.44 and 72,317.76 is: 108,486.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,602.56 : 285,929.44 = 72,317.76 : x
  2. Step 2: Convert to fraction form
    190,602.56/285,929.44 = 72,317.76/x
  3. Step 3: Cross multiply
    190,602.56x = 285,929.44 × 72,317.76
  4. Step 4: Simplify right side
    190,602.56x = 20,677,776,618.85
  5. Step 5: Solve for x
    x = 20,677,776,618.85/190,602.56
  6. Step 6: Final answer
    x = 108,486.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.