Home / 118,631.84-163,512.42-89,942

Finding the Fourth Proportional to 118,631.84, 163,512.42 and 89,942

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Solution

The fourth proportional to 118,631.84, 163,512.42 and 89,942 is: 123,968.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,631.84 : 163,512.42 = 89,942 : x
  2. Step 2: Convert to fraction form
    118,631.84/163,512.42 = 89,942/x
  3. Step 3: Cross multiply
    118,631.84x = 163,512.42 × 89,942
  4. Step 4: Simplify right side
    118,631.84x = 14,706,634,079.64
  5. Step 5: Solve for x
    x = 14,706,634,079.64/118,631.84
  6. Step 6: Final answer
    x = 123,968.69

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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.