Home / 121,279,300.80-181,918,951.20-66,670,785.60

Finding the Fourth Proportional to 121,279,300.80, 181,918,951.20 and 66,670,785.60

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Solution

The fourth proportional to 121,279,300.80, 181,918,951.20 and 66,670,785.60 is: 100,006,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,279,300.80 : 181,918,951.20 = 66,670,785.60 : x
  2. Step 2: Convert to fraction form
    121,279,300.80/181,918,951.20 = 66,670,785.60/x
  3. Step 3: Cross multiply
    121,279,300.80x = 181,918,951.20 × 66,670,785.60
  4. Step 4: Simplify right side
    121,279,300.80x = 12,128,679,392,032,062
  5. Step 5: Solve for x
    x = 12,128,679,392,032,062/121,279,300.80
  6. Step 6: Final answer
    x = 100,006,178.40

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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.