Home / 112,391.53-155,111.03-61,412.00

Finding the Fourth Proportional to 112,391.53, 155,111.03 and 61,412.00

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Solution

The fourth proportional to 112,391.53, 155,111.03 and 61,412.00 is: 84,754.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,391.53 : 155,111.03 = 61,412.00 : x
  2. Step 2: Convert to fraction form
    112,391.53/155,111.03 = 61,412.00/x
  3. Step 3: Cross multiply
    112,391.53x = 155,111.03 × 61,412.00
  4. Step 4: Simplify right side
    112,391.53x = 9,525,679,115.67
  5. Step 5: Solve for x
    x = 9,525,679,115.67/112,391.53
  6. Step 6: Final answer
    x = 84,754.42

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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.