Home / 139,738,177.60-209,607,266.40-79,272,001.60

Finding the Fourth Proportional to 139,738,177.60, 209,607,266.40 and 79,272,001.60

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Solution

The fourth proportional to 139,738,177.60, 209,607,266.40 and 79,272,001.60 is: 118,908,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,738,177.60 : 209,607,266.40 = 79,272,001.60 : x
  2. Step 2: Convert to fraction form
    139,738,177.60/209,607,266.40 = 79,272,001.60/x
  3. Step 3: Cross multiply
    139,738,177.60x = 209,607,266.40 × 79,272,001.60
  4. Step 4: Simplify right side
    139,738,177.60x = 16,615,987,557,432,426
  5. Step 5: Solve for x
    x = 16,615,987,557,432,426/139,738,177.60
  6. Step 6: Final answer
    x = 118,908,002.40

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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.