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Finding the Fourth Proportional to 153,216.39, 211,264.29 and 107,879.88

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Solution

The fourth proportional to 153,216.39, 211,264.29 and 107,879.88 is: 148,751.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,216.39 : 211,264.29 = 107,879.88 : x
  2. Step 2: Convert to fraction form
    153,216.39/211,264.29 = 107,879.88/x
  3. Step 3: Cross multiply
    153,216.39x = 211,264.29 × 107,879.88
  4. Step 4: Simplify right side
    153,216.39x = 22,791,166,253.49
  5. Step 5: Solve for x
    x = 22,791,166,253.49/153,216.39
  6. Step 6: Final answer
    x = 148,751.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.