Home / 155,957.52-215,221.89-84,338.06

Finding the Fourth Proportional to 155,957.52, 215,221.89 and 84,338.06

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Solution

The fourth proportional to 155,957.52, 215,221.89 and 84,338.06 is: 116,386.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,957.52 : 215,221.89 = 84,338.06 : x
  2. Step 2: Convert to fraction form
    155,957.52/215,221.89 = 84,338.06/x
  3. Step 3: Cross multiply
    155,957.52x = 215,221.89 × 84,338.06
  4. Step 4: Simplify right side
    155,957.52x = 18,151,395,912.29
  5. Step 5: Solve for x
    x = 18,151,395,912.29/155,957.52
  6. Step 6: Final answer
    x = 116,386.79

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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.