Home / 118,707.81-178,075.77-74,338.23

Finding the Fourth Proportional to 118,707.81, 178,075.77 and 74,338.23

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Solution

The fourth proportional to 118,707.81, 178,075.77 and 74,338.23 is: 111,516.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,707.81 : 178,075.77 = 74,338.23 : x
  2. Step 2: Convert to fraction form
    118,707.81/178,075.77 = 74,338.23/x
  3. Step 3: Cross multiply
    118,707.81x = 178,075.77 × 74,338.23
  4. Step 4: Simplify right side
    118,707.81x = 13,237,836,657.31
  5. Step 5: Solve for x
    x = 13,237,836,657.31/118,707.81
  6. Step 6: Final answer
    x = 111,516.14

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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.