Home / 153,717.93-212,131.89-85,739.31

Finding the Fourth Proportional to 153,717.93, 212,131.89 and 85,739.31

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Solution

The fourth proportional to 153,717.93, 212,131.89 and 85,739.31 is: 118,320.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,717.93 : 212,131.89 = 85,739.31 : x
  2. Step 2: Convert to fraction form
    153,717.93/212,131.89 = 85,739.31/x
  3. Step 3: Cross multiply
    153,717.93x = 212,131.89 × 85,739.31
  4. Step 4: Simplify right side
    153,717.93x = 18,188,041,877.60
  5. Step 5: Solve for x
    x = 18,188,041,877.60/153,717.93
  6. Step 6: Final answer
    x = 118,320.89

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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.