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Finding the Fourth Proportional to 187,607.78, 258,923.40 and 107,016.80

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Solution

The fourth proportional to 187,607.78, 258,923.40 and 107,016.80 is: 147,697.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,607.78 : 258,923.40 = 107,016.80 : x
  2. Step 2: Convert to fraction form
    187,607.78/258,923.40 = 107,016.80/x
  3. Step 3: Cross multiply
    187,607.78x = 258,923.40 × 107,016.80
  4. Step 4: Simplify right side
    187,607.78x = 27,709,153,713.12
  5. Step 5: Solve for x
    x = 27,709,153,713.12/187,607.78
  6. Step 6: Final answer
    x = 147,697.25

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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.