Home / 152,037.20-228,055.80-77,128.40

Finding the Fourth Proportional to 152,037.20, 228,055.80 and 77,128.40

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Solution

The fourth proportional to 152,037.20, 228,055.80 and 77,128.40 is: 115,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,037.20 : 228,055.80 = 77,128.40 : x
  2. Step 2: Convert to fraction form
    152,037.20/228,055.80 = 77,128.40/x
  3. Step 3: Cross multiply
    152,037.20x = 228,055.80 × 77,128.40
  4. Step 4: Simplify right side
    152,037.20x = 17,589,578,964.72
  5. Step 5: Solve for x
    x = 17,589,578,964.72/152,037.20
  6. Step 6: Final answer
    x = 115,692.60

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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.