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Finding the Fourth Proportional to 134,376.80, 201,392.40 and 81,730.40

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Solution

The fourth proportional to 134,376.80, 201,392.40 and 81,730.40 is: 122,490.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,376.80 : 201,392.40 = 81,730.40 : x
  2. Step 2: Convert to fraction form
    134,376.80/201,392.40 = 81,730.40/x
  3. Step 3: Cross multiply
    134,376.80x = 201,392.40 × 81,730.40
  4. Step 4: Simplify right side
    134,376.80x = 16,459,881,408.96
  5. Step 5: Solve for x
    x = 16,459,881,408.96/134,376.80
  6. Step 6: Final answer
    x = 122,490.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.