Home / 157,646.40-217,556.66-86,031.05

Finding the Fourth Proportional to 157,646.40, 217,556.66 and 86,031.05

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Solution

The fourth proportional to 157,646.40, 217,556.66 and 86,031.05 is: 118,725.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,646.40 : 217,556.66 = 86,031.05 : x
  2. Step 2: Convert to fraction form
    157,646.40/217,556.66 = 86,031.05/x
  3. Step 3: Cross multiply
    157,646.40x = 217,556.66 × 86,031.05
  4. Step 4: Simplify right side
    157,646.40x = 18,716,626,376.35
  5. Step 5: Solve for x
    x = 18,716,626,376.35/157,646.40
  6. Step 6: Final answer
    x = 118,725.36

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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.