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Finding the Fourth Proportional to 114,951.36, 158,705.76 and 78,713.45

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Solution

The fourth proportional to 114,951.36, 158,705.76 and 78,713.45 is: 108,674.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,951.36 : 158,705.76 = 78,713.45 : x
  2. Step 2: Convert to fraction form
    114,951.36/158,705.76 = 78,713.45/x
  3. Step 3: Cross multiply
    114,951.36x = 158,705.76 × 78,713.45
  4. Step 4: Simplify right side
    114,951.36x = 12,492,277,904.47
  5. Step 5: Solve for x
    x = 12,492,277,904.47/114,951.36
  6. Step 6: Final answer
    x = 108,674.47

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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.