Home / 153,820.20-212,271.52-85,833

Finding the Fourth Proportional to 153,820.20, 212,271.52 and 85,833

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Solution

The fourth proportional to 153,820.20, 212,271.52 and 85,833 is: 118,449.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,820.20 : 212,271.52 = 85,833 : x
  2. Step 2: Convert to fraction form
    153,820.20/212,271.52 = 85,833/x
  3. Step 3: Cross multiply
    153,820.20x = 212,271.52 × 85,833
  4. Step 4: Simplify right side
    153,820.20x = 18,219,901,376.16
  5. Step 5: Solve for x
    x = 18,219,901,376.16/153,820.20
  6. Step 6: Final answer
    x = 118,449.34

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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.