Home / 99,444.19-148,969.44-86,978.29

Finding the Fourth Proportional to 99,444.19, 148,969.44 and 86,978.29

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Solution

The fourth proportional to 99,444.19, 148,969.44 and 86,978.29 is: 130,295.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,444.19 : 148,969.44 = 86,978.29 : x
  2. Step 2: Convert to fraction form
    99,444.19/148,969.44 = 86,978.29/x
  3. Step 3: Cross multiply
    99,444.19x = 148,969.44 × 86,978.29
  4. Step 4: Simplify right side
    99,444.19x = 12,957,107,153.46
  5. Step 5: Solve for x
    x = 12,957,107,153.46/99,444.19
  6. Step 6: Final answer
    x = 130,295.27

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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.