Home / 128,570,018.50-177,423,607.67-75,650,153.81

Finding the Fourth Proportional to 128,570,018.50, 177,423,607.67 and 75,650,153.81

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Solution

The fourth proportional to 128,570,018.50, 177,423,607.67 and 75,650,153.81 is: 104,395,436.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,570,018.50 : 177,423,607.67 = 75,650,153.81 : x
  2. Step 2: Convert to fraction form
    128,570,018.50/177,423,607.67 = 75,650,153.81/x
  3. Step 3: Cross multiply
    128,570,018.50x = 177,423,607.67 × 75,650,153.81
  4. Step 4: Simplify right side
    128,570,018.50x = 13,422,123,209,444,254
  5. Step 5: Solve for x
    x = 13,422,123,209,444,254/128,570,018.50
  6. Step 6: Final answer
    x = 104,395,436.56

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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.