Home / 153,838.12-212,307.27-85,868.36

Finding the Fourth Proportional to 153,838.12, 212,307.27 and 85,868.36

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Solution

The fourth proportional to 153,838.12, 212,307.27 and 85,868.36 is: 118,504.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,838.12 : 212,307.27 = 85,868.36 : x
  2. Step 2: Convert to fraction form
    153,838.12/212,307.27 = 85,868.36/x
  3. Step 3: Cross multiply
    153,838.12x = 212,307.27 × 85,868.36
  4. Step 4: Simplify right side
    153,838.12x = 18,230,477,090.98
  5. Step 5: Solve for x
    x = 18,230,477,090.98/153,838.12
  6. Step 6: Final answer
    x = 118,504.29

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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.