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Finding the Fourth Proportional to 100,014.64, 138,054.96 and 57,590.08

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Solution

The fourth proportional to 100,014.64, 138,054.96 and 57,590.08 is: 79,494.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,014.64 : 138,054.96 = 57,590.08 : x
  2. Step 2: Convert to fraction form
    100,014.64/138,054.96 = 57,590.08/x
  3. Step 3: Cross multiply
    100,014.64x = 138,054.96 × 57,590.08
  4. Step 4: Simplify right side
    100,014.64x = 7,950,596,190.80
  5. Step 5: Solve for x
    x = 7,950,596,190.80/100,014.64
  6. Step 6: Final answer
    x = 79,494.32

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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.