Home / 127,989,738.78-176,625,725.40-72,246,892.38

Finding the Fourth Proportional to 127,989,738.78, 176,625,725.40 and 72,246,892.38

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Solution

The fourth proportional to 127,989,738.78, 176,625,725.40 and 72,246,892.38 is: 99,700,647.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,989,738.78 : 176,625,725.40 = 72,246,892.38 : x
  2. Step 2: Convert to fraction form
    127,989,738.78/176,625,725.40 = 72,246,892.38/x
  3. Step 3: Cross multiply
    127,989,738.78x = 176,625,725.40 × 72,246,892.38
  4. Step 4: Simplify right side
    127,989,738.78x = 12,760,659,774,513,232
  5. Step 5: Solve for x
    x = 12,760,659,774,513,232/127,989,738.78
  6. Step 6: Final answer
    x = 99,700,647.07

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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.