Home / 99,921.74-137,897.25-57,486.65

Finding the Fourth Proportional to 99,921.74, 137,897.25 and 57,486.65

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Solution

The fourth proportional to 99,921.74, 137,897.25 and 57,486.65 is: 79,334.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,921.74 : 137,897.25 = 57,486.65 : x
  2. Step 2: Convert to fraction form
    99,921.74/137,897.25 = 57,486.65/x
  3. Step 3: Cross multiply
    99,921.74x = 137,897.25 × 57,486.65
  4. Step 4: Simplify right side
    99,921.74x = 7,927,250,946.71
  5. Step 5: Solve for x
    x = 7,927,250,946.71/99,921.74
  6. Step 6: Final answer
    x = 79,334.60

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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.