Home / 112,400.81-155,111.27-61,412.44

Finding the Fourth Proportional to 112,400.81, 155,111.27 and 61,412.44

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Solution

The fourth proportional to 112,400.81, 155,111.27 and 61,412.44 is: 84,748.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,400.81 : 155,111.27 = 61,412.44 : x
  2. Step 2: Convert to fraction form
    112,400.81/155,111.27 = 61,412.44/x
  3. Step 3: Cross multiply
    112,400.81x = 155,111.27 × 61,412.44
  4. Step 4: Simplify right side
    112,400.81x = 9,525,761,562.20
  5. Step 5: Solve for x
    x = 9,525,761,562.20/112,400.81
  6. Step 6: Final answer
    x = 84,748.16

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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.