Home / 138,810,768.02-208,216,139.38-61,087,672

Finding the Fourth Proportional to 138,810,768.02, 208,216,139.38 and 61,087,672

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Solution

The fourth proportional to 138,810,768.02, 208,216,139.38 and 61,087,672 is: 91,631,502.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,810,768.02 : 208,216,139.38 = 61,087,672 : x
  2. Step 2: Convert to fraction form
    138,810,768.02/208,216,139.38 = 61,087,672/x
  3. Step 3: Cross multiply
    138,810,768.02x = 208,216,139.38 × 61,087,672
  4. Step 4: Simplify right side
    138,810,768.02x = 12,719,439,227,551,724
  5. Step 5: Solve for x
    x = 12,719,439,227,551,724/138,810,768.02
  6. Step 6: Final answer
    x = 91,631,502.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.