Home / 112,418.84-155,133.24-61,430.36

Finding the Fourth Proportional to 112,418.84, 155,133.24 and 61,430.36

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Solution

The fourth proportional to 112,418.84, 155,133.24 and 61,430.36 is: 84,771.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,418.84 : 155,133.24 = 61,430.36 : x
  2. Step 2: Convert to fraction form
    112,418.84/155,133.24 = 61,430.36/x
  3. Step 3: Cross multiply
    112,418.84x = 155,133.24 × 61,430.36
  4. Step 4: Simplify right side
    112,418.84x = 9,529,890,781.17
  5. Step 5: Solve for x
    x = 9,529,890,781.17/112,418.84
  6. Step 6: Final answer
    x = 84,771.30

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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.