Home / 127,438,001.28-190,888,228.80-86,522,555.52

Finding the Fourth Proportional to 127,438,001.28, 190,888,228.80 and 86,522,555.52

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Solution

The fourth proportional to 127,438,001.28, 190,888,228.80 and 86,522,555.52 is: 129,601,352.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,438,001.28 : 190,888,228.80 = 86,522,555.52 : x
  2. Step 2: Convert to fraction form
    127,438,001.28/190,888,228.80 = 86,522,555.52/x
  3. Step 3: Cross multiply
    127,438,001.28x = 190,888,228.80 × 86,522,555.52
  4. Step 4: Simplify right side
    127,438,001.28x = 16,516,137,374,462,464
  5. Step 5: Solve for x
    x = 16,516,137,374,462,464/127,438,001.28
  6. Step 6: Final answer
    x = 129,601,352.88

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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.