Home / 100,585.16-138,801.30-58,136.84

Finding the Fourth Proportional to 100,585.16, 138,801.30 and 58,136.84

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Solution

The fourth proportional to 100,585.16, 138,801.30 and 58,136.84 is: 80,225.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,585.16 : 138,801.30 = 58,136.84 : x
  2. Step 2: Convert to fraction form
    100,585.16/138,801.30 = 58,136.84/x
  3. Step 3: Cross multiply
    100,585.16x = 138,801.30 × 58,136.84
  4. Step 4: Simplify right side
    100,585.16x = 8,069,468,969.89
  5. Step 5: Solve for x
    x = 8,069,468,969.89/100,585.16
  6. Step 6: Final answer
    x = 80,225.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.