Home / 112,122.87-154,727.58-61,136

Finding the Fourth Proportional to 112,122.87, 154,727.58 and 61,136

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Solution

The fourth proportional to 112,122.87, 154,727.58 and 61,136 is: 84,366.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,122.87 : 154,727.58 = 61,136 : x
  2. Step 2: Convert to fraction form
    112,122.87/154,727.58 = 61,136/x
  3. Step 3: Cross multiply
    112,122.87x = 154,727.58 × 61,136
  4. Step 4: Simplify right side
    112,122.87x = 9,459,425,330.88
  5. Step 5: Solve for x
    x = 9,459,425,330.88/112,122.87
  6. Step 6: Final answer
    x = 84,366.60

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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.