Home / 112,775.02-155,629.49-61,791

Finding the Fourth Proportional to 112,775.02, 155,629.49 and 61,791

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Solution

The fourth proportional to 112,775.02, 155,629.49 and 61,791 is: 85,271.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,775.02 : 155,629.49 = 61,791 : x
  2. Step 2: Convert to fraction form
    112,775.02/155,629.49 = 61,791/x
  3. Step 3: Cross multiply
    112,775.02x = 155,629.49 × 61,791
  4. Step 4: Simplify right side
    112,775.02x = 9,616,501,816.59
  5. Step 5: Solve for x
    x = 9,616,501,816.59/112,775.02
  6. Step 6: Final answer
    x = 85,271.56

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1.5x scale

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.