Home / 139,097,239.20-208,645,858.80-87,365,066.40

Finding the Fourth Proportional to 139,097,239.20, 208,645,858.80 and 87,365,066.40

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Solution

The fourth proportional to 139,097,239.20, 208,645,858.80 and 87,365,066.40 is: 131,047,599.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,097,239.20 : 208,645,858.80 = 87,365,066.40 : x
  2. Step 2: Convert to fraction form
    139,097,239.20/208,645,858.80 = 87,365,066.40/x
  3. Step 3: Cross multiply
    139,097,239.20x = 208,645,858.80 × 87,365,066.40
  4. Step 4: Simplify right side
    139,097,239.20x = 18,228,359,308,147,028
  5. Step 5: Solve for x
    x = 18,228,359,308,147,028/139,097,239.20
  6. Step 6: Final answer
    x = 131,047,599.60

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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.