Home / 128,406,971.56-192,569,995.50-42,125,272.36

Finding the Fourth Proportional to 128,406,971.56, 192,569,995.50 and 42,125,272.36

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Solution

The fourth proportional to 128,406,971.56, 192,569,995.50 and 42,125,272.36 is: 63,174,634.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,406,971.56 : 192,569,995.50 = 42,125,272.36 : x
  2. Step 2: Convert to fraction form
    128,406,971.56/192,569,995.50 = 42,125,272.36/x
  3. Step 3: Cross multiply
    128,406,971.56x = 192,569,995.50 × 42,125,272.36
  4. Step 4: Simplify right side
    128,406,971.56x = 8,112,063,508,801,474
  5. Step 5: Solve for x
    x = 8,112,063,508,801,474/128,406,971.56
  6. Step 6: Final answer
    x = 63,174,634.60

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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.