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Finding the Fourth Proportional to 132,903.71, 183,411.54 and 72,477.66

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Solution

The fourth proportional to 132,903.71, 183,411.54 and 72,477.66 is: 100,021.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,903.71 : 183,411.54 = 72,477.66 : x
  2. Step 2: Convert to fraction form
    132,903.71/183,411.54 = 72,477.66/x
  3. Step 3: Cross multiply
    132,903.71x = 183,411.54 × 72,477.66
  4. Step 4: Simplify right side
    132,903.71x = 13,293,238,319.14
  5. Step 5: Solve for x
    x = 13,293,238,319.14/132,903.71
  6. Step 6: Final answer
    x = 100,021.58

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1.5x scale

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.