Home / 112,828.06-155,374.59-105,615.96

Finding the Fourth Proportional to 112,828.06, 155,374.59 and 105,615.96

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Solution

The fourth proportional to 112,828.06, 155,374.59 and 105,615.96 is: 145,442.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,828.06 : 155,374.59 = 105,615.96 : x
  2. Step 2: Convert to fraction form
    112,828.06/155,374.59 = 105,615.96/x
  3. Step 3: Cross multiply
    112,828.06x = 155,374.59 × 105,615.96
  4. Step 4: Simplify right side
    112,828.06x = 16,410,036,482.46
  5. Step 5: Solve for x
    x = 16,410,036,482.46/112,828.06
  6. Step 6: Final answer
    x = 145,442.87

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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.