Home / 137,637.60-189,980.28-89,898.36

Finding the Fourth Proportional to 137,637.60, 189,980.28 and 89,898.36

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Solution

The fourth proportional to 137,637.60, 189,980.28 and 89,898.36 is: 124,086.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,637.60 : 189,980.28 = 89,898.36 : x
  2. Step 2: Convert to fraction form
    137,637.60/189,980.28 = 89,898.36/x
  3. Step 3: Cross multiply
    137,637.60x = 189,980.28 × 89,898.36
  4. Step 4: Simplify right side
    137,637.60x = 17,078,915,604.34
  5. Step 5: Solve for x
    x = 17,078,915,604.34/137,637.60
  6. Step 6: Final answer
    x = 124,086.12

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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.