Home / 128,045,557.36-176,719,690.20-73,028,802.16

Finding the Fourth Proportional to 128,045,557.36, 176,719,690.20 and 73,028,802.16

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Solution

The fourth proportional to 128,045,557.36, 176,719,690.20 and 73,028,802.16 is: 100,789,340.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,045,557.36 : 176,719,690.20 = 73,028,802.16 : x
  2. Step 2: Convert to fraction form
    128,045,557.36/176,719,690.20 = 73,028,802.16/x
  3. Step 3: Cross multiply
    128,045,557.36x = 176,719,690.20 × 73,028,802.16
  4. Step 4: Simplify right side
    128,045,557.36x = 12,905,627,293,392,290
  5. Step 5: Solve for x
    x = 12,905,627,293,392,290/128,045,557.36
  6. Step 6: Final answer
    x = 100,789,340.60

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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.