Home / 212,872,040.40-319,308,060.60-91,939,688.40

Finding the Fourth Proportional to 212,872,040.40, 319,308,060.60 and 91,939,688.40

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Solution

The fourth proportional to 212,872,040.40, 319,308,060.60 and 91,939,688.40 is: 137,909,532.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,872,040.40 : 319,308,060.60 = 91,939,688.40 : x
  2. Step 2: Convert to fraction form
    212,872,040.40/319,308,060.60 = 91,939,688.40/x
  3. Step 3: Cross multiply
    212,872,040.40x = 319,308,060.60 × 91,939,688.40
  4. Step 4: Simplify right side
    212,872,040.40x = 29,357,083,595,172,320
  5. Step 5: Solve for x
    x = 29,357,083,595,172,320/212,872,040.40
  6. Step 6: Final answer
    x = 137,909,532.60

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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.