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Finding the Fourth Proportional to 96,153.84, 143,978.40 and 67,921.20

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Solution

The fourth proportional to 96,153.84, 143,978.40 and 67,921.20 is: 101,703.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,153.84 : 143,978.40 = 67,921.20 : x
  2. Step 2: Convert to fraction form
    96,153.84/143,978.40 = 67,921.20/x
  3. Step 3: Cross multiply
    96,153.84x = 143,978.40 × 67,921.20
  4. Step 4: Simplify right side
    96,153.84x = 9,779,185,702.08
  5. Step 5: Solve for x
    x = 9,779,185,702.08/96,153.84
  6. Step 6: Final answer
    x = 101,703.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.