Home / 117,376.40-161,973.96-72,045.20

Finding the Fourth Proportional to 117,376.40, 161,973.96 and 72,045.20

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Solution

The fourth proportional to 117,376.40, 161,973.96 and 72,045.20 is: 99,419.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,376.40 : 161,973.96 = 72,045.20 : x
  2. Step 2: Convert to fraction form
    117,376.40/161,973.96 = 72,045.20/x
  3. Step 3: Cross multiply
    117,376.40x = 161,973.96 × 72,045.20
  4. Step 4: Simplify right side
    117,376.40x = 11,669,446,342.99
  5. Step 5: Solve for x
    x = 11,669,446,342.99/117,376.40
  6. Step 6: Final answer
    x = 99,419.02

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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.