Home / 131,259,870.72-181,142,274-72,526,320.48

Finding the Fourth Proportional to 131,259,870.72, 181,142,274 and 72,526,320.48

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Solution

The fourth proportional to 131,259,870.72, 181,142,274 and 72,526,320.48 is: 100,088,340.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,259,870.72 : 181,142,274 = 72,526,320.48 : x
  2. Step 2: Convert to fraction form
    131,259,870.72/181,142,274 = 72,526,320.48/x
  3. Step 3: Cross multiply
    131,259,870.72x = 181,142,274 × 72,526,320.48
  4. Step 4: Simplify right side
    131,259,870.72x = 13,137,582,616,599,972
  5. Step 5: Solve for x
    x = 13,137,582,616,599,972/131,259,870.72
  6. Step 6: Final answer
    x = 100,088,340.36

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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.