Home / 145,338.48-200,556.69-79,931.91

Finding the Fourth Proportional to 145,338.48, 200,556.69 and 79,931.91

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Solution

The fourth proportional to 145,338.48, 200,556.69 and 79,931.91 is: 110,300.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,338.48 : 200,556.69 = 79,931.91 : x
  2. Step 2: Convert to fraction form
    145,338.48/200,556.69 = 79,931.91/x
  3. Step 3: Cross multiply
    145,338.48x = 200,556.69 × 79,931.91
  4. Step 4: Simplify right side
    145,338.48x = 16,030,879,897.19
  5. Step 5: Solve for x
    x = 16,030,879,897.19/145,338.48
  6. Step 6: Final answer
    x = 110,300.31

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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.