Home / 128,164,303.89-176,823,232.07-72,401,577.57

Finding the Fourth Proportional to 128,164,303.89, 176,823,232.07 and 72,401,577.57

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Solution

The fourth proportional to 128,164,303.89, 176,823,232.07 and 72,401,577.57 is: 99,889,599.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,164,303.89 : 176,823,232.07 = 72,401,577.57 : x
  2. Step 2: Convert to fraction form
    128,164,303.89/176,823,232.07 = 72,401,577.57/x
  3. Step 3: Cross multiply
    128,164,303.89x = 176,823,232.07 × 72,401,577.57
  4. Step 4: Simplify right side
    128,164,303.89x = 12,802,280,952,532,208
  5. Step 5: Solve for x
    x = 12,802,280,952,532,208/128,164,303.89
  6. Step 6: Final answer
    x = 99,889,599.24

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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.