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Finding the Fourth Proportional to 99,130.65, 148,696.25 and 69,680.22

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Solution

The fourth proportional to 99,130.65, 148,696.25 and 69,680.22 is: 104,520.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,130.65 : 148,696.25 = 69,680.22 : x
  2. Step 2: Convert to fraction form
    99,130.65/148,696.25 = 69,680.22/x
  3. Step 3: Cross multiply
    99,130.65x = 148,696.25 × 69,680.22
  4. Step 4: Simplify right side
    99,130.65x = 10,361,187,064.77
  5. Step 5: Solve for x
    x = 10,361,187,064.77/99,130.65
  6. Step 6: Final answer
    x = 104,520.52

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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.