Home / 112,398.09-155,107.55-61,409.72

Finding the Fourth Proportional to 112,398.09, 155,107.55 and 61,409.72

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Solution

The fourth proportional to 112,398.09, 155,107.55 and 61,409.72 is: 84,744.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,398.09 : 155,107.55 = 61,409.72 : x
  2. Step 2: Convert to fraction form
    112,398.09/155,107.55 = 61,409.72/x
  3. Step 3: Cross multiply
    112,398.09x = 155,107.55 × 61,409.72
  4. Step 4: Simplify right side
    112,398.09x = 9,525,111,474.90
  5. Step 5: Solve for x
    x = 9,525,111,474.90/112,398.09
  6. Step 6: Final answer
    x = 84,744.43

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1.5x scale

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.