Home / 153,423.48-211,718.50-85,443.33

Finding the Fourth Proportional to 153,423.48, 211,718.50 and 85,443.33

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Solution

The fourth proportional to 153,423.48, 211,718.50 and 85,443.33 is: 117,908.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,423.48 : 211,718.50 = 85,443.33 : x
  2. Step 2: Convert to fraction form
    153,423.48/211,718.50 = 85,443.33/x
  3. Step 3: Cross multiply
    153,423.48x = 211,718.50 × 85,443.33
  4. Step 4: Simplify right side
    153,423.48x = 18,089,932,176.80
  5. Step 5: Solve for x
    x = 18,089,932,176.80/153,423.48
  6. Step 6: Final answer
    x = 117,908.50

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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.