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Finding the Fourth Proportional to 118,678.16, 178,016.79 and 48,557.45

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Solution

The fourth proportional to 118,678.16, 178,016.79 and 48,557.45 is: 72,835.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,678.16 : 178,016.79 = 48,557.45 : x
  2. Step 2: Convert to fraction form
    118,678.16/178,016.79 = 48,557.45/x
  3. Step 3: Cross multiply
    118,678.16x = 178,016.79 × 48,557.45
  4. Step 4: Simplify right side
    118,678.16x = 8,644,041,379.59
  5. Step 5: Solve for x
    x = 8,644,041,379.59/118,678.16
  6. Step 6: Final answer
    x = 72,835.99

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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.