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Finding the Fourth Proportional to 158,945, 219,347.92 and 87,329.64

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Solution

The fourth proportional to 158,945, 219,347.92 and 87,329.64 is: 120,517.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,945 : 219,347.92 = 87,329.64 : x
  2. Step 2: Convert to fraction form
    158,945/219,347.92 = 87,329.64/x
  3. Step 3: Cross multiply
    158,945x = 219,347.92 × 87,329.64
  4. Step 4: Simplify right side
    158,945x = 19,155,574,888.35
  5. Step 5: Solve for x
    x = 19,155,574,888.35/158,945
  6. Step 6: Final answer
    x = 120,517.00

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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.