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Finding the Fourth Proportional to 111,492, 153,878.40 and 63,747.36

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Solution

The fourth proportional to 111,492, 153,878.40 and 63,747.36 is: 87,982.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,492 : 153,878.40 = 63,747.36 : x
  2. Step 2: Convert to fraction form
    111,492/153,878.40 = 63,747.36/x
  3. Step 3: Cross multiply
    111,492x = 153,878.40 × 63,747.36
  4. Step 4: Simplify right side
    111,492x = 9,809,341,761.02
  5. Step 5: Solve for x
    x = 9,809,341,761.02/111,492
  6. Step 6: Final answer
    x = 87,982.47

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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.