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Finding the Fourth Proportional to 147,322.79, 203,295.87 and 86,879.57

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Solution

The fourth proportional to 147,322.79, 203,295.87 and 86,879.57 is: 119,888.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,322.79 : 203,295.87 = 86,879.57 : x
  2. Step 2: Convert to fraction form
    147,322.79/203,295.87 = 86,879.57/x
  3. Step 3: Cross multiply
    147,322.79x = 203,295.87 × 86,879.57
  4. Step 4: Simplify right side
    147,322.79x = 17,662,258,276.62
  5. Step 5: Solve for x
    x = 17,662,258,276.62/147,322.79
  6. Step 6: Final answer
    x = 119,888.16

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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.