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Finding the Fourth Proportional to 190,420.88, 262,887 and 130,082

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Solution

The fourth proportional to 190,420.88, 262,887 and 130,082 is: 179,585.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,420.88 : 262,887 = 130,082 : x
  2. Step 2: Convert to fraction form
    190,420.88/262,887 = 130,082/x
  3. Step 3: Cross multiply
    190,420.88x = 262,887 × 130,082
  4. Step 4: Simplify right side
    190,420.88x = 34,196,866,734
  5. Step 5: Solve for x
    x = 34,196,866,734/190,420.88
  6. Step 6: Final answer
    x = 179,585.70

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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.