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Finding the Fourth Proportional to 120,000.80, 179,828.40 and 53,386.40

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Solution

The fourth proportional to 120,000.80, 179,828.40 and 53,386.40 is: 80,002.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,000.80 : 179,828.40 = 53,386.40 : x
  2. Step 2: Convert to fraction form
    120,000.80/179,828.40 = 53,386.40/x
  3. Step 3: Cross multiply
    120,000.80x = 179,828.40 × 53,386.40
  4. Step 4: Simplify right side
    120,000.80x = 9,600,390,893.76
  5. Step 5: Solve for x
    x = 9,600,390,893.76/120,000.80
  6. Step 6: Final answer
    x = 80,002.72

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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.