Home / 139,968,009.90-209,952,014.85-128,882,544.30

Finding the Fourth Proportional to 139,968,009.90, 209,952,014.85 and 128,882,544.30

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Solution

The fourth proportional to 139,968,009.90, 209,952,014.85 and 128,882,544.30 is: 193,323,816.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,009.90 : 209,952,014.85 = 128,882,544.30 : x
  2. Step 2: Convert to fraction form
    139,968,009.90/209,952,014.85 = 128,882,544.30/x
  3. Step 3: Cross multiply
    139,968,009.90x = 209,952,014.85 × 128,882,544.30
  4. Step 4: Simplify right side
    139,968,009.90x = 27,059,149,854,779,380
  5. Step 5: Solve for x
    x = 27,059,149,854,779,380/139,968,009.90
  6. Step 6: Final answer
    x = 193,323,816.45

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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.