Home / 105,643.22-145,787.85-57,898.34

Finding the Fourth Proportional to 105,643.22, 145,787.85 and 57,898.34

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Solution

The fourth proportional to 105,643.22, 145,787.85 and 57,898.34 is: 79,899.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,643.22 : 145,787.85 = 57,898.34 : x
  2. Step 2: Convert to fraction form
    105,643.22/145,787.85 = 57,898.34/x
  3. Step 3: Cross multiply
    105,643.22x = 145,787.85 × 57,898.34
  4. Step 4: Simplify right side
    105,643.22x = 8,440,874,507.17
  5. Step 5: Solve for x
    x = 8,440,874,507.17/105,643.22
  6. Step 6: Final answer
    x = 79,899.82

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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.