Home / 98,742.88-136,123.40-70,399.36

Finding the Fourth Proportional to 98,742.88, 136,123.40 and 70,399.36

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Solution

The fourth proportional to 98,742.88, 136,123.40 and 70,399.36 is: 97,050.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,742.88 : 136,123.40 = 70,399.36 : x
  2. Step 2: Convert to fraction form
    98,742.88/136,123.40 = 70,399.36/x
  3. Step 3: Cross multiply
    98,742.88x = 136,123.40 × 70,399.36
  4. Step 4: Simplify right side
    98,742.88x = 9,583,000,241.02
  5. Step 5: Solve for x
    x = 9,583,000,241.02/98,742.88
  6. Step 6: Final answer
    x = 97,050.04

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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.