Home / 128,045,517.36-176,719,635-73,028,762.16

Finding the Fourth Proportional to 128,045,517.36, 176,719,635 and 73,028,762.16

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Solution

The fourth proportional to 128,045,517.36, 176,719,635 and 73,028,762.16 is: 100,789,285.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,045,517.36 : 176,719,635 = 73,028,762.16 : x
  2. Step 2: Convert to fraction form
    128,045,517.36/176,719,635 = 73,028,762.16/x
  3. Step 3: Cross multiply
    128,045,517.36x = 176,719,635 × 73,028,762.16
  4. Step 4: Simplify right side
    128,045,517.36x = 12,905,616,193,417,010
  5. Step 5: Solve for x
    x = 12,905,616,193,417,010/128,045,517.36
  6. Step 6: Final answer
    x = 100,789,285.40

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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.