Home / 190,501.20-285,643.80-72,176.40

Finding the Fourth Proportional to 190,501.20, 285,643.80 and 72,176.40

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Solution

The fourth proportional to 190,501.20, 285,643.80 and 72,176.40 is: 108,223.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,501.20 : 285,643.80 = 72,176.40 : x
  2. Step 2: Convert to fraction form
    190,501.20/285,643.80 = 72,176.40/x
  3. Step 3: Cross multiply
    190,501.20x = 285,643.80 × 72,176.40
  4. Step 4: Simplify right side
    190,501.20x = 20,616,741,166.32
  5. Step 5: Solve for x
    x = 20,616,741,166.32/190,501.20
  6. Step 6: Final answer
    x = 108,223.68

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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.