Home / 134,830.64-186,029.16-81,108.20

Finding the Fourth Proportional to 134,830.64, 186,029.16 and 81,108.20

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Solution

The fourth proportional to 134,830.64, 186,029.16 and 81,108.20 is: 111,906.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,830.64 : 186,029.16 = 81,108.20 : x
  2. Step 2: Convert to fraction form
    134,830.64/186,029.16 = 81,108.20/x
  3. Step 3: Cross multiply
    134,830.64x = 186,029.16 × 81,108.20
  4. Step 4: Simplify right side
    134,830.64x = 15,088,490,315.11
  5. Step 5: Solve for x
    x = 15,088,490,315.11/134,830.64
  6. Step 6: Final answer
    x = 111,906.98

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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.