Home / 113,127.74-155,988.35-72,238.11

Finding the Fourth Proportional to 113,127.74, 155,988.35 and 72,238.11

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Solution

The fourth proportional to 113,127.74, 155,988.35 and 72,238.11 is: 99,606.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,127.74 : 155,988.35 = 72,238.11 : x
  2. Step 2: Convert to fraction form
    113,127.74/155,988.35 = 72,238.11/x
  3. Step 3: Cross multiply
    113,127.74x = 155,988.35 × 72,238.11
  4. Step 4: Simplify right side
    113,127.74x = 11,268,302,928.34
  5. Step 5: Solve for x
    x = 11,268,302,928.34/113,127.74
  6. Step 6: Final answer
    x = 99,606.89

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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.