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Finding the Fourth Proportional to 153,816.72, 212,235.33 and 88,392.87

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Solution

The fourth proportional to 153,816.72, 212,235.33 and 88,392.87 is: 121,963.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,816.72 : 212,235.33 = 88,392.87 : x
  2. Step 2: Convert to fraction form
    153,816.72/212,235.33 = 88,392.87/x
  3. Step 3: Cross multiply
    153,816.72x = 212,235.33 × 88,392.87
  4. Step 4: Simplify right side
    153,816.72x = 18,760,089,934.10
  5. Step 5: Solve for x
    x = 18,760,089,934.10/153,816.72
  6. Step 6: Final answer
    x = 121,963.92

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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.