Home / 205,738.48-308,704.77-72,681.40

Finding the Fourth Proportional to 205,738.48, 308,704.77 and 72,681.40

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Solution

The fourth proportional to 205,738.48, 308,704.77 and 72,681.40 is: 109,056.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,738.48 : 308,704.77 = 72,681.40 : x
  2. Step 2: Convert to fraction form
    205,738.48/308,704.77 = 72,681.40/x
  3. Step 3: Cross multiply
    205,738.48x = 308,704.77 × 72,681.40
  4. Step 4: Simplify right side
    205,738.48x = 22,437,095,256.16
  5. Step 5: Solve for x
    x = 22,437,095,256.16/205,738.48
  6. Step 6: Final answer
    x = 109,056.39

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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.