Home / 190,302.16-262,603.72-105,412

Finding the Fourth Proportional to 190,302.16, 262,603.72 and 105,412

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Solution

The fourth proportional to 190,302.16, 262,603.72 and 105,412 is: 145,461.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,302.16 : 262,603.72 = 105,412 : x
  2. Step 2: Convert to fraction form
    190,302.16/262,603.72 = 105,412/x
  3. Step 3: Cross multiply
    190,302.16x = 262,603.72 × 105,412
  4. Step 4: Simplify right side
    190,302.16x = 27,681,583,332.64
  5. Step 5: Solve for x
    x = 27,681,583,332.64/190,302.16
  6. Step 6: Final answer
    x = 145,461.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.