Home / 153,999.37-212,516.89-86,017.31

Finding the Fourth Proportional to 153,999.37, 212,516.89 and 86,017.31

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Solution

The fourth proportional to 153,999.37, 212,516.89 and 86,017.31 is: 118,702.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,999.37 : 212,516.89 = 86,017.31 : x
  2. Step 2: Convert to fraction form
    153,999.37/212,516.89 = 86,017.31/x
  3. Step 3: Cross multiply
    153,999.37x = 212,516.89 × 86,017.31
  4. Step 4: Simplify right side
    153,999.37x = 18,280,130,777.28
  5. Step 5: Solve for x
    x = 18,280,130,777.28/153,999.37
  6. Step 6: Final answer
    x = 118,702.63

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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.