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Finding the Fourth Proportional to 101,173, 139,621.62 and 56,463.88

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Solution

The fourth proportional to 101,173, 139,621.62 and 56,463.88 is: 77,921.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,173 : 139,621.62 = 56,463.88 : x
  2. Step 2: Convert to fraction form
    101,173/139,621.62 = 56,463.88/x
  3. Step 3: Cross multiply
    101,173x = 139,621.62 × 56,463.88
  4. Step 4: Simplify right side
    101,173x = 7,883,578,397.09
  5. Step 5: Solve for x
    x = 7,883,578,397.09/101,173
  6. Step 6: Final answer
    x = 77,921.76

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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.