Home / 134,780.58-185,990.56-81,055.16

Finding the Fourth Proportional to 134,780.58, 185,990.56 and 81,055.16

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Solution

The fourth proportional to 134,780.58, 185,990.56 and 81,055.16 is: 111,852.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,780.58 : 185,990.56 = 81,055.16 : x
  2. Step 2: Convert to fraction form
    134,780.58/185,990.56 = 81,055.16/x
  3. Step 3: Cross multiply
    134,780.58x = 185,990.56 × 81,055.16
  4. Step 4: Simplify right side
    134,780.58x = 15,075,494,599.29
  5. Step 5: Solve for x
    x = 15,075,494,599.29/134,780.58
  6. Step 6: Final answer
    x = 111,852.13

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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.