Home / 120,928,000.80-181,392,001.20-66,319,485.60

Finding the Fourth Proportional to 120,928,000.80, 181,392,001.20 and 66,319,485.60

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Solution

The fourth proportional to 120,928,000.80, 181,392,001.20 and 66,319,485.60 is: 99,479,228.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,928,000.80 : 181,392,001.20 = 66,319,485.60 : x
  2. Step 2: Convert to fraction form
    120,928,000.80/181,392,001.20 = 66,319,485.60/x
  3. Step 3: Cross multiply
    120,928,000.80x = 181,392,001.20 × 66,319,485.60
  4. Step 4: Simplify right side
    120,928,000.80x = 12,029,824,211,538,582
  5. Step 5: Solve for x
    x = 12,029,824,211,538,582/120,928,000.80
  6. Step 6: Final answer
    x = 99,479,228.40

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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.