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Finding the Fourth Proportional to 112,287.16, 154,952.22 and 61,985.08

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Solution

The fourth proportional to 112,287.16, 154,952.22 and 61,985.08 is: 85,537.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,287.16 : 154,952.22 = 61,985.08 : x
  2. Step 2: Convert to fraction form
    112,287.16/154,952.22 = 61,985.08/x
  3. Step 3: Cross multiply
    112,287.16x = 154,952.22 × 61,985.08
  4. Step 4: Simplify right side
    112,287.16x = 9,604,725,752.88
  5. Step 5: Solve for x
    x = 9,604,725,752.88/112,287.16
  6. Step 6: Final answer
    x = 85,537.17

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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.