Home / 105,807.90-158,717.04-42,619.49

Finding the Fourth Proportional to 105,807.90, 158,717.04 and 42,619.49

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Solution

The fourth proportional to 105,807.90, 158,717.04 and 42,619.49 is: 63,931.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,807.90 : 158,717.04 = 42,619.49 : x
  2. Step 2: Convert to fraction form
    105,807.90/158,717.04 = 42,619.49/x
  3. Step 3: Cross multiply
    105,807.90x = 158,717.04 × 42,619.49
  4. Step 4: Simplify right side
    105,807.90x = 6,764,439,299.11
  5. Step 5: Solve for x
    x = 6,764,439,299.11/105,807.90
  6. Step 6: Final answer
    x = 63,931.33

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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.