Home / 155,938.16-215,194.79-84,318.23

Finding the Fourth Proportional to 155,938.16, 215,194.79 and 84,318.23

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Solution

The fourth proportional to 155,938.16, 215,194.79 and 84,318.23 is: 116,359.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,938.16 : 215,194.79 = 84,318.23 : x
  2. Step 2: Convert to fraction form
    155,938.16/215,194.79 = 84,318.23/x
  3. Step 3: Cross multiply
    155,938.16x = 215,194.79 × 84,318.23
  4. Step 4: Simplify right side
    155,938.16x = 18,144,843,798.02
  5. Step 5: Solve for x
    x = 18,144,843,798.02/155,938.16
  6. Step 6: Final answer
    x = 116,359.23

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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.