Home / 128,763,902.61-193,145,903.12-31,721,496.62

Finding the Fourth Proportional to 128,763,902.61, 193,145,903.12 and 31,721,496.62

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Solution

The fourth proportional to 128,763,902.61, 193,145,903.12 and 31,721,496.62 is: 47,582,257.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,763,902.61 : 193,145,903.12 = 31,721,496.62 : x
  2. Step 2: Convert to fraction form
    128,763,902.61/193,145,903.12 = 31,721,496.62/x
  3. Step 3: Cross multiply
    128,763,902.61x = 193,145,903.12 × 31,721,496.62
  4. Step 4: Simplify right side
    128,763,902.61x = 6,126,877,112,101,501
  5. Step 5: Solve for x
    x = 6,126,877,112,101,501/128,763,902.61
  6. Step 6: Final answer
    x = 47,582,257.04

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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.