Home / 128,461,754.72-177,276,774.44-69,724,419.66

Finding the Fourth Proportional to 128,461,754.72, 177,276,774.44 and 69,724,419.66

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Solution

The fourth proportional to 128,461,754.72, 177,276,774.44 and 69,724,419.66 is: 96,219,456.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,461,754.72 : 177,276,774.44 = 69,724,419.66 : x
  2. Step 2: Convert to fraction form
    128,461,754.72/177,276,774.44 = 69,724,419.66/x
  3. Step 3: Cross multiply
    128,461,754.72x = 177,276,774.44 × 69,724,419.66
  4. Step 4: Simplify right side
    128,461,754.72x = 12,360,520,217,200,032
  5. Step 5: Solve for x
    x = 12,360,520,217,200,032/128,461,754.72
  6. Step 6: Final answer
    x = 96,219,456.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.