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Finding the Fourth Proportional to 101,490.06, 140,190.15 and 77,908.14

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Solution

The fourth proportional to 101,490.06, 140,190.15 and 77,908.14 is: 107,616.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,490.06 : 140,190.15 = 77,908.14 : x
  2. Step 2: Convert to fraction form
    101,490.06/140,190.15 = 77,908.14/x
  3. Step 3: Cross multiply
    101,490.06x = 140,190.15 × 77,908.14
  4. Step 4: Simplify right side
    101,490.06x = 10,921,953,832.82
  5. Step 5: Solve for x
    x = 10,921,953,832.82/101,490.06
  6. Step 6: Final answer
    x = 107,616.00

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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.