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Finding the Fourth Proportional to 132,528, 182,888.64 and 72,915.84

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Solution

The fourth proportional to 132,528, 182,888.64 and 72,915.84 is: 100,623.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,528 : 182,888.64 = 72,915.84 : x
  2. Step 2: Convert to fraction form
    132,528/182,888.64 = 72,915.84/x
  3. Step 3: Cross multiply
    132,528x = 182,888.64 × 72,915.84
  4. Step 4: Simplify right side
    132,528x = 13,335,478,812.06
  5. Step 5: Solve for x
    x = 13,335,478,812.06/132,528
  6. Step 6: Final answer
    x = 100,623.86

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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.