Home / 190,720.36-286,080.80-66,061.36

Finding the Fourth Proportional to 190,720.36, 286,080.80 and 66,061.36

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Solution

The fourth proportional to 190,720.36, 286,080.80 and 66,061.36 is: 99,092.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,720.36 : 286,080.80 = 66,061.36 : x
  2. Step 2: Convert to fraction form
    190,720.36/286,080.80 = 66,061.36/x
  3. Step 3: Cross multiply
    190,720.36x = 286,080.80 × 66,061.36
  4. Step 4: Simplify right side
    190,720.36x = 18,898,886,717.89
  5. Step 5: Solve for x
    x = 18,898,886,717.89/190,720.36
  6. Step 6: Final answer
    x = 99,092.13

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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.