Home / 112,129.12-154,730.28-61,827.04

Finding the Fourth Proportional to 112,129.12, 154,730.28 and 61,827.04

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Solution

The fourth proportional to 112,129.12, 154,730.28 and 61,827.04 is: 85,316.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,129.12 : 154,730.28 = 61,827.04 : x
  2. Step 2: Convert to fraction form
    112,129.12/154,730.28 = 61,827.04/x
  3. Step 3: Cross multiply
    112,129.12x = 154,730.28 × 61,827.04
  4. Step 4: Simplify right side
    112,129.12x = 9,566,515,210.77
  5. Step 5: Solve for x
    x = 9,566,515,210.77/112,129.12
  6. Step 6: Final answer
    x = 85,316.96

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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.