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Finding the Fourth Proportional to 101,443.20, 152,164.80 and 69,950.40

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Solution

The fourth proportional to 101,443.20, 152,164.80 and 69,950.40 is: 104,925.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,443.20 : 152,164.80 = 69,950.40 : x
  2. Step 2: Convert to fraction form
    101,443.20/152,164.80 = 69,950.40/x
  3. Step 3: Cross multiply
    101,443.20x = 152,164.80 × 69,950.40
  4. Step 4: Simplify right side
    101,443.20x = 10,643,988,625.92
  5. Step 5: Solve for x
    x = 10,643,988,625.92/101,443.20
  6. Step 6: Final answer
    x = 104,925.60

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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.