Home / 128,726,846.30-193,090,269.45-74,307,287.90

Finding the Fourth Proportional to 128,726,846.30, 193,090,269.45 and 74,307,287.90

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Solution

The fourth proportional to 128,726,846.30, 193,090,269.45 and 74,307,287.90 is: 111,460,931.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,726,846.30 : 193,090,269.45 = 74,307,287.90 : x
  2. Step 2: Convert to fraction form
    128,726,846.30/193,090,269.45 = 74,307,287.90/x
  3. Step 3: Cross multiply
    128,726,846.30x = 193,090,269.45 × 74,307,287.90
  4. Step 4: Simplify right side
    128,726,846.30x = 14,348,014,242,709,724
  5. Step 5: Solve for x
    x = 14,348,014,242,709,724/128,726,846.30
  6. Step 6: Final answer
    x = 111,460,931.85

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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.