Home / 91,909,036.20-137,721,836.70-79,721,322.60

Finding the Fourth Proportional to 91,909,036.20, 137,721,836.70 and 79,721,322.60

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Solution

The fourth proportional to 91,909,036.20, 137,721,836.70 and 79,721,322.60 is: 119,459,058.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,909,036.20 : 137,721,836.70 = 79,721,322.60 : x
  2. Step 2: Convert to fraction form
    91,909,036.20/137,721,836.70 = 79,721,322.60/x
  3. Step 3: Cross multiply
    91,909,036.20x = 137,721,836.70 × 79,721,322.60
  4. Step 4: Simplify right side
    91,909,036.20x = 10,979,366,972,625,218
  5. Step 5: Solve for x
    x = 10,979,366,972,625,218/91,909,036.20
  6. Step 6: Final answer
    x = 119,459,058.94

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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.