Home / 153,923.78-212,412.74-85,941.80

Finding the Fourth Proportional to 153,923.78, 212,412.74 and 85,941.80

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Solution

The fourth proportional to 153,923.78, 212,412.74 and 85,941.80 is: 118,598.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,923.78 : 212,412.74 = 85,941.80 : x
  2. Step 2: Convert to fraction form
    153,923.78/212,412.74 = 85,941.80/x
  3. Step 3: Cross multiply
    153,923.78x = 212,412.74 × 85,941.80
  4. Step 4: Simplify right side
    153,923.78x = 18,255,133,218.53
  5. Step 5: Solve for x
    x = 18,255,133,218.53/153,923.78
  6. Step 6: Final answer
    x = 118,598.52

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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.