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Finding the Fourth Proportional to 163,574.70, 245,370.15 and 84,842.70

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Solution

The fourth proportional to 163,574.70, 245,370.15 and 84,842.70 is: 127,268.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,574.70 : 245,370.15 = 84,842.70 : x
  2. Step 2: Convert to fraction form
    163,574.70/245,370.15 = 84,842.70/x
  3. Step 3: Cross multiply
    163,574.70x = 245,370.15 × 84,842.70
  4. Step 4: Simplify right side
    163,574.70x = 20,817,866,025.41
  5. Step 5: Solve for x
    x = 20,817,866,025.41/163,574.70
  6. Step 6: Final answer
    x = 127,268.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.