Home / 144,120.69-216,312.22-76,709.32

Finding the Fourth Proportional to 144,120.69, 216,312.22 and 76,709.32

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Solution

The fourth proportional to 144,120.69, 216,312.22 and 76,709.32 is: 115,133.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,120.69 : 216,312.22 = 76,709.32 : x
  2. Step 2: Convert to fraction form
    144,120.69/216,312.22 = 76,709.32/x
  3. Step 3: Cross multiply
    144,120.69x = 216,312.22 × 76,709.32
  4. Step 4: Simplify right side
    144,120.69x = 16,593,163,303.89
  5. Step 5: Solve for x
    x = 16,593,163,303.89/144,120.69
  6. Step 6: Final answer
    x = 115,133.80

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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.