Home / 112,405.14-155,191.41-72,136.26

Finding the Fourth Proportional to 112,405.14, 155,191.41 and 72,136.26

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Solution

The fourth proportional to 112,405.14, 155,191.41 and 72,136.26 is: 99,594.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,405.14 : 155,191.41 = 72,136.26 : x
  2. Step 2: Convert to fraction form
    112,405.14/155,191.41 = 72,136.26/x
  3. Step 3: Cross multiply
    112,405.14x = 155,191.41 × 72,136.26
  4. Step 4: Simplify right side
    112,405.14x = 11,194,927,901.53
  5. Step 5: Solve for x
    x = 11,194,927,901.53/112,405.14
  6. Step 6: Final answer
    x = 99,594.45

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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.