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Finding the Fourth Proportional to 174,870.80, 262,435.80 and 128,214.80

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Solution

The fourth proportional to 174,870.80, 262,435.80 and 128,214.80 is: 192,417.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,870.80 : 262,435.80 = 128,214.80 : x
  2. Step 2: Convert to fraction form
    174,870.80/262,435.80 = 128,214.80/x
  3. Step 3: Cross multiply
    174,870.80x = 262,435.80 × 128,214.80
  4. Step 4: Simplify right side
    174,870.80x = 33,648,153,609.84
  5. Step 5: Solve for x
    x = 33,648,153,609.84/174,870.80
  6. Step 6: Final answer
    x = 192,417.22

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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.