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Finding the Fourth Proportional to 132,838.88, 183,314.40 and 72,411.20

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Solution

The fourth proportional to 132,838.88, 183,314.40 and 72,411.20 is: 99,925.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,838.88 : 183,314.40 = 72,411.20 : x
  2. Step 2: Convert to fraction form
    132,838.88/183,314.40 = 72,411.20/x
  3. Step 3: Cross multiply
    132,838.88x = 183,314.40 × 72,411.20
  4. Step 4: Simplify right side
    132,838.88x = 13,274,015,681.28
  5. Step 5: Solve for x
    x = 13,274,015,681.28/132,838.88
  6. Step 6: Final answer
    x = 99,925.68

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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.