Home / 142,541,690.40-213,599,959.20-120,858,897.60

Finding the Fourth Proportional to 142,541,690.40, 213,599,959.20 and 120,858,897.60

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Solution

The fourth proportional to 142,541,690.40, 213,599,959.20 and 120,858,897.60 is: 181,108,106.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,541,690.40 : 213,599,959.20 = 120,858,897.60 : x
  2. Step 2: Convert to fraction form
    142,541,690.40/213,599,959.20 = 120,858,897.60/x
  3. Step 3: Cross multiply
    142,541,690.40x = 213,599,959.20 × 120,858,897.60
  4. Step 4: Simplify right side
    142,541,690.40x = 25,815,455,596,316,976
  5. Step 5: Solve for x
    x = 25,815,455,596,316,976/142,541,690.40
  6. Step 6: Final answer
    x = 181,108,106.15

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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.