Home / 190,678.77-286,035-70,737.09

Finding the Fourth Proportional to 190,678.77, 286,035 and 70,737.09

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Solution

The fourth proportional to 190,678.77, 286,035 and 70,737.09 is: 106,111.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,678.77 : 286,035 = 70,737.09 : x
  2. Step 2: Convert to fraction form
    190,678.77/286,035 = 70,737.09/x
  3. Step 3: Cross multiply
    190,678.77x = 286,035 × 70,737.09
  4. Step 4: Simplify right side
    190,678.77x = 20,233,283,538.15
  5. Step 5: Solve for x
    x = 20,233,283,538.15/190,678.77
  6. Step 6: Final answer
    x = 106,111.88

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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.