Home / 99,219.20-148,828.80-67,726.40

Finding the Fourth Proportional to 99,219.20, 148,828.80 and 67,726.40

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Solution

The fourth proportional to 99,219.20, 148,828.80 and 67,726.40 is: 101,589.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,219.20 : 148,828.80 = 67,726.40 : x
  2. Step 2: Convert to fraction form
    99,219.20/148,828.80 = 67,726.40/x
  3. Step 3: Cross multiply
    99,219.20x = 148,828.80 × 67,726.40
  4. Step 4: Simplify right side
    99,219.20x = 10,079,638,840.32
  5. Step 5: Solve for x
    x = 10,079,638,840.32/99,219.20
  6. Step 6: Final answer
    x = 101,589.60

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1.5x scale

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.