Home / 146,918.20-220,644.60-128,547.40

Finding the Fourth Proportional to 146,918.20, 220,644.60 and 128,547.40

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Solution

The fourth proportional to 146,918.20, 220,644.60 and 128,547.40 is: 193,054.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,918.20 : 220,644.60 = 128,547.40 : x
  2. Step 2: Convert to fraction form
    146,918.20/220,644.60 = 128,547.40/x
  3. Step 3: Cross multiply
    146,918.20x = 220,644.60 × 128,547.40
  4. Step 4: Simplify right side
    146,918.20x = 28,363,289,654.04
  5. Step 5: Solve for x
    x = 28,363,289,654.04/146,918.20
  6. Step 6: Final answer
    x = 193,054.98

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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.