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Finding the Fourth Proportional to 144,024.60, 216,036.90 and 80,779.80

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Solution

The fourth proportional to 144,024.60, 216,036.90 and 80,779.80 is: 121,169.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,024.60 : 216,036.90 = 80,779.80 : x
  2. Step 2: Convert to fraction form
    144,024.60/216,036.90 = 80,779.80/x
  3. Step 3: Cross multiply
    144,024.60x = 216,036.90 × 80,779.80
  4. Step 4: Simplify right side
    144,024.60x = 17,451,417,574.62
  5. Step 5: Solve for x
    x = 17,451,417,574.62/144,024.60
  6. Step 6: Final answer
    x = 121,169.70

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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.