Home / 128,825,709.40-193,089,264.90-52,110,803.80

Finding the Fourth Proportional to 128,825,709.40, 193,089,264.90 and 52,110,803.80

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Solution

The fourth proportional to 128,825,709.40, 193,089,264.90 and 52,110,803.80 is: 78,105,813.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,825,709.40 : 193,089,264.90 = 52,110,803.80 : x
  2. Step 2: Convert to fraction form
    128,825,709.40/193,089,264.90 = 52,110,803.80/x
  3. Step 3: Cross multiply
    128,825,709.40x = 193,089,264.90 × 52,110,803.80
  4. Step 4: Simplify right side
    128,825,709.40x = 10,062,036,799,090,126
  5. Step 5: Solve for x
    x = 10,062,036,799,090,126/128,825,709.40
  6. Step 6: Final answer
    x = 78,105,813.24

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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.