Home / 155,032.83-213,955.87-86,130.37

Finding the Fourth Proportional to 155,032.83, 213,955.87 and 86,130.37

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Solution

The fourth proportional to 155,032.83, 213,955.87 and 86,130.37 is: 118,865.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,032.83 : 213,955.87 = 86,130.37 : x
  2. Step 2: Convert to fraction form
    155,032.83/213,955.87 = 86,130.37/x
  3. Step 3: Cross multiply
    155,032.83x = 213,955.87 × 86,130.37
  4. Step 4: Simplify right side
    155,032.83x = 18,428,098,433.00
  5. Step 5: Solve for x
    x = 18,428,098,433.00/155,032.83
  6. Step 6: Final answer
    x = 118,865.78

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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.