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Finding the Fourth Proportional to 164,013.80, 245,867.10 and 128,455.40

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Solution

The fourth proportional to 164,013.80, 245,867.10 and 128,455.40 is: 192,562.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,013.80 : 245,867.10 = 128,455.40 : x
  2. Step 2: Convert to fraction form
    164,013.80/245,867.10 = 128,455.40/x
  3. Step 3: Cross multiply
    164,013.80x = 245,867.10 × 128,455.40
  4. Step 4: Simplify right side
    164,013.80x = 31,582,956,677.34
  5. Step 5: Solve for x
    x = 31,582,956,677.34/164,013.80
  6. Step 6: Final answer
    x = 192,562.80

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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.