Home / 112,122.04-154,689.61-71,858.01

Finding the Fourth Proportional to 112,122.04, 154,689.61 and 71,858.01

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Solution

The fourth proportional to 112,122.04, 154,689.61 and 71,858.01 is: 99,139.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,122.04 : 154,689.61 = 71,858.01 : x
  2. Step 2: Convert to fraction form
    112,122.04/154,689.61 = 71,858.01/x
  3. Step 3: Cross multiply
    112,122.04x = 154,689.61 × 71,858.01
  4. Step 4: Simplify right side
    112,122.04x = 11,115,686,409.54
  5. Step 5: Solve for x
    x = 11,115,686,409.54/112,122.04
  6. Step 6: Final answer
    x = 99,139.17

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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.