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Finding the Fourth Proportional to 147,041.20, 219,978.60 and 127,536.40

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Solution

The fourth proportional to 147,041.20, 219,978.60 and 127,536.40 is: 190,798.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,041.20 : 219,978.60 = 127,536.40 : x
  2. Step 2: Convert to fraction form
    147,041.20/219,978.60 = 127,536.40/x
  3. Step 3: Cross multiply
    147,041.20x = 219,978.60 × 127,536.40
  4. Step 4: Simplify right side
    147,041.20x = 28,055,278,721.04
  5. Step 5: Solve for x
    x = 28,055,278,721.04/147,041.20
  6. Step 6: Final answer
    x = 190,798.76

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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.