Home / 153,867.47-212,347.78-85,897.80

Finding the Fourth Proportional to 153,867.47, 212,347.78 and 85,897.80

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Solution

The fourth proportional to 153,867.47, 212,347.78 and 85,897.80 is: 118,544.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,867.47 : 212,347.78 = 85,897.80 : x
  2. Step 2: Convert to fraction form
    153,867.47/212,347.78 = 85,897.80/x
  3. Step 3: Cross multiply
    153,867.47x = 212,347.78 × 85,897.80
  4. Step 4: Simplify right side
    153,867.47x = 18,240,206,922.14
  5. Step 5: Solve for x
    x = 18,240,206,922.14/153,867.47
  6. Step 6: Final answer
    x = 118,544.92

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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.