Home / 124,519.12-186,905.79-91,140.03

Finding the Fourth Proportional to 124,519.12, 186,905.79 and 91,140.03

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Solution

The fourth proportional to 124,519.12, 186,905.79 and 91,140.03 is: 136,803.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,519.12 : 186,905.79 = 91,140.03 : x
  2. Step 2: Convert to fraction form
    124,519.12/186,905.79 = 91,140.03/x
  3. Step 3: Cross multiply
    124,519.12x = 186,905.79 × 91,140.03
  4. Step 4: Simplify right side
    124,519.12x = 17,034,599,307.77
  5. Step 5: Solve for x
    x = 17,034,599,307.77/124,519.12
  6. Step 6: Final answer
    x = 136,803.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.