Home / 134,855.07-186,061.64-81,113.19

Finding the Fourth Proportional to 134,855.07, 186,061.64 and 81,113.19

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Solution

The fourth proportional to 134,855.07, 186,061.64 and 81,113.19 is: 111,913.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,855.07 : 186,061.64 = 81,113.19 : x
  2. Step 2: Convert to fraction form
    134,855.07/186,061.64 = 81,113.19/x
  3. Step 3: Cross multiply
    134,855.07x = 186,061.64 × 81,113.19
  4. Step 4: Simplify right side
    134,855.07x = 15,092,052,751.47
  5. Step 5: Solve for x
    x = 15,092,052,751.47/134,855.07
  6. Step 6: Final answer
    x = 111,913.13

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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.