Home / 125,728,720.56-188,714,708.01-90,749,897.64

Finding the Fourth Proportional to 125,728,720.56, 188,714,708.01 and 90,749,897.64

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Solution

The fourth proportional to 125,728,720.56, 188,714,708.01 and 90,749,897.64 is: 136,212,635.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,728,720.56 : 188,714,708.01 = 90,749,897.64 : x
  2. Step 2: Convert to fraction form
    125,728,720.56/188,714,708.01 = 90,749,897.64/x
  3. Step 3: Cross multiply
    125,728,720.56x = 188,714,708.01 × 90,749,897.64
  4. Step 4: Simplify right side
    125,728,720.56x = 17,125,840,435,069,988
  5. Step 5: Solve for x
    x = 17,125,840,435,069,988/125,728,720.56
  6. Step 6: Final answer
    x = 136,212,635.89

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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.