Home / 132,938.71-183,457.61-72,509.36

Finding the Fourth Proportional to 132,938.71, 183,457.61 and 72,509.36

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Solution

The fourth proportional to 132,938.71, 183,457.61 and 72,509.36 is: 100,064.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,938.71 : 183,457.61 = 72,509.36 : x
  2. Step 2: Convert to fraction form
    132,938.71/183,457.61 = 72,509.36/x
  3. Step 3: Cross multiply
    132,938.71x = 183,457.61 × 72,509.36
  4. Step 4: Simplify right side
    132,938.71x = 13,302,392,880.30
  5. Step 5: Solve for x
    x = 13,302,392,880.30/132,938.71
  6. Step 6: Final answer
    x = 100,064.11

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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.