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Finding the Fourth Proportional to 102,779.20, 144,305.60 and 102,779.20

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Solution

The fourth proportional to 102,779.20, 144,305.60 and 102,779.20 is: 144,305.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,779.20 : 144,305.60 = 102,779.20 : x
  2. Step 2: Convert to fraction form
    102,779.20/144,305.60 = 102,779.20/x
  3. Step 3: Cross multiply
    102,779.20x = 144,305.60 × 102,779.20
  4. Step 4: Simplify right side
    102,779.20x = 14,831,614,123.52
  5. Step 5: Solve for x
    x = 14,831,614,123.52/102,779.20
  6. Step 6: Final answer
    x = 144,305.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.