Home / 117,556.78-162,118.65-90,656.14

Finding the Fourth Proportional to 117,556.78, 162,118.65 and 90,656.14

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Solution

The fourth proportional to 117,556.78, 162,118.65 and 90,656.14 is: 125,020.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,556.78 : 162,118.65 = 90,656.14 : x
  2. Step 2: Convert to fraction form
    117,556.78/162,118.65 = 90,656.14/x
  3. Step 3: Cross multiply
    117,556.78x = 162,118.65 × 90,656.14
  4. Step 4: Simplify right side
    117,556.78x = 14,697,051,031.01
  5. Step 5: Solve for x
    x = 14,697,051,031.01/117,556.78
  6. Step 6: Final answer
    x = 125,020.87

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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.