Home / 153,820.25-212,271.54-85,836.50

Finding the Fourth Proportional to 153,820.25, 212,271.54 and 85,836.50

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Solution

The fourth proportional to 153,820.25, 212,271.54 and 85,836.50 is: 118,454.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,820.25 : 212,271.54 = 85,836.50 : x
  2. Step 2: Convert to fraction form
    153,820.25/212,271.54 = 85,836.50/x
  3. Step 3: Cross multiply
    153,820.25x = 212,271.54 × 85,836.50
  4. Step 4: Simplify right side
    153,820.25x = 18,220,645,777.87
  5. Step 5: Solve for x
    x = 18,220,645,777.87/153,820.25
  6. Step 6: Final answer
    x = 118,454.15

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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.