Home / 147,646.20-220,886.10-128,141.40

Finding the Fourth Proportional to 147,646.20, 220,886.10 and 128,141.40

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Solution

The fourth proportional to 147,646.20, 220,886.10 and 128,141.40 is: 191,705.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,646.20 : 220,886.10 = 128,141.40 : x
  2. Step 2: Convert to fraction form
    147,646.20/220,886.10 = 128,141.40/x
  3. Step 3: Cross multiply
    147,646.20x = 220,886.10 × 128,141.40
  4. Step 4: Simplify right side
    147,646.20x = 28,304,654,094.54
  5. Step 5: Solve for x
    x = 28,304,654,094.54/147,646.20
  6. Step 6: Final answer
    x = 191,705.94

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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.