Home / 147,370.12-203,365.38-86,943.40

Finding the Fourth Proportional to 147,370.12, 203,365.38 and 86,943.40

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Solution

The fourth proportional to 147,370.12, 203,365.38 and 86,943.40 is: 119,978.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,370.12 : 203,365.38 = 86,943.40 : x
  2. Step 2: Convert to fraction form
    147,370.12/203,365.38 = 86,943.40/x
  3. Step 3: Cross multiply
    147,370.12x = 203,365.38 × 86,943.40
  4. Step 4: Simplify right side
    147,370.12x = 17,681,277,579.49
  5. Step 5: Solve for x
    x = 17,681,277,579.49/147,370.12
  6. Step 6: Final answer
    x = 119,978.71

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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.