Home / 190,607.68-285,802.12-72,203.50

Finding the Fourth Proportional to 190,607.68, 285,802.12 and 72,203.50

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Solution

The fourth proportional to 190,607.68, 285,802.12 and 72,203.50 is: 108,263.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,607.68 : 285,802.12 = 72,203.50 : x
  2. Step 2: Convert to fraction form
    190,607.68/285,802.12 = 72,203.50/x
  3. Step 3: Cross multiply
    190,607.68x = 285,802.12 × 72,203.50
  4. Step 4: Simplify right side
    190,607.68x = 20,635,913,371.42
  5. Step 5: Solve for x
    x = 20,635,913,371.42/190,607.68
  6. Step 6: Final answer
    x = 108,263.81

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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.