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Finding the Fourth Proportional to 152,030.94, 209,780.39 and 86,620.41

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Solution

The fourth proportional to 152,030.94, 209,780.39 and 86,620.41 is: 119,523.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,030.94 : 209,780.39 = 86,620.41 : x
  2. Step 2: Convert to fraction form
    152,030.94/209,780.39 = 86,620.41/x
  3. Step 3: Cross multiply
    152,030.94x = 209,780.39 × 86,620.41
  4. Step 4: Simplify right side
    152,030.94x = 18,171,262,958.66
  5. Step 5: Solve for x
    x = 18,171,262,958.66/152,030.94
  6. Step 6: Final answer
    x = 119,523.45

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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.