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Finding the Fourth Proportional to 145,121.63, 217,424.63 and 123,845.76

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Solution

The fourth proportional to 145,121.63, 217,424.63 and 123,845.76 is: 185,548.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,121.63 : 217,424.63 = 123,845.76 : x
  2. Step 2: Convert to fraction form
    145,121.63/217,424.63 = 123,845.76/x
  3. Step 3: Cross multiply
    145,121.63x = 217,424.63 × 123,845.76
  4. Step 4: Simplify right side
    145,121.63x = 26,927,117,925.84
  5. Step 5: Solve for x
    x = 26,927,117,925.84/145,121.63
  6. Step 6: Final answer
    x = 185,548.62

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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.