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Finding the Fourth Proportional to 153,556.72, 211,904.72 and 85,573.36

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Solution

The fourth proportional to 153,556.72, 211,904.72 and 85,573.36 is: 118,089.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,556.72 : 211,904.72 = 85,573.36 : x
  2. Step 2: Convert to fraction form
    153,556.72/211,904.72 = 85,573.36/x
  3. Step 3: Cross multiply
    153,556.72x = 211,904.72 × 85,573.36
  4. Step 4: Simplify right side
    153,556.72x = 18,133,398,890.26
  5. Step 5: Solve for x
    x = 18,133,398,890.26/153,556.72
  6. Step 6: Final answer
    x = 118,089.26

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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.