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Finding the Fourth Proportional to 111,448.18, 153,798.78 and 63,702.73

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Solution

The fourth proportional to 111,448.18, 153,798.78 and 63,702.73 is: 87,909.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,448.18 : 153,798.78 = 63,702.73 : x
  2. Step 2: Convert to fraction form
    111,448.18/153,798.78 = 63,702.73/x
  3. Step 3: Cross multiply
    111,448.18x = 153,798.78 × 63,702.73
  4. Step 4: Simplify right side
    111,448.18x = 9,797,402,156.67
  5. Step 5: Solve for x
    x = 9,797,402,156.67/111,448.18
  6. Step 6: Final answer
    x = 87,909.93

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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.