Home / 190,780.80-285,782.40-97,339.20

Finding the Fourth Proportional to 190,780.80, 285,782.40 and 97,339.20

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Solution

The fourth proportional to 190,780.80, 285,782.40 and 97,339.20 is: 145,810.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,780.80 : 285,782.40 = 97,339.20 : x
  2. Step 2: Convert to fraction form
    190,780.80/285,782.40 = 97,339.20/x
  3. Step 3: Cross multiply
    190,780.80x = 285,782.40 × 97,339.20
  4. Step 4: Simplify right side
    190,780.80x = 27,817,830,190.08
  5. Step 5: Solve for x
    x = 27,817,830,190.08/190,780.80
  6. Step 6: Final answer
    x = 145,810.43

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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.