Home / 97,938.40-135,152.58-57,109.96

Finding the Fourth Proportional to 97,938.40, 135,152.58 and 57,109.96

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Solution

The fourth proportional to 97,938.40, 135,152.58 and 57,109.96 is: 78,810.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,938.40 : 135,152.58 = 57,109.96 : x
  2. Step 2: Convert to fraction form
    97,938.40/135,152.58 = 57,109.96/x
  3. Step 3: Cross multiply
    97,938.40x = 135,152.58 × 57,109.96
  4. Step 4: Simplify right side
    97,938.40x = 7,718,558,437.70
  5. Step 5: Solve for x
    x = 7,718,558,437.70/97,938.40
  6. Step 6: Final answer
    x = 78,810.34

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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.