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Finding the Fourth Proportional to 185,880.42, 278,446.41 and 85,902.93

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Solution

The fourth proportional to 185,880.42, 278,446.41 and 85,902.93 is: 128,681.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,880.42 : 278,446.41 = 85,902.93 : x
  2. Step 2: Convert to fraction form
    185,880.42/278,446.41 = 85,902.93/x
  3. Step 3: Cross multiply
    185,880.42x = 278,446.41 × 85,902.93
  4. Step 4: Simplify right side
    185,880.42x = 23,919,362,466.98
  5. Step 5: Solve for x
    x = 23,919,362,466.98/185,880.42
  6. Step 6: Final answer
    x = 128,681.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.