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Finding the Fourth Proportional to 190,999.04, 286,498.56 and 72,643.04

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Solution

The fourth proportional to 190,999.04, 286,498.56 and 72,643.04 is: 108,964.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,999.04 : 286,498.56 = 72,643.04 : x
  2. Step 2: Convert to fraction form
    190,999.04/286,498.56 = 72,643.04/x
  3. Step 3: Cross multiply
    190,999.04x = 286,498.56 × 72,643.04
  4. Step 4: Simplify right side
    190,999.04x = 20,812,126,354.02
  5. Step 5: Solve for x
    x = 20,812,126,354.02/190,999.04
  6. Step 6: Final answer
    x = 108,964.56

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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.