Home / 112,988.16-156,129.98-82,307.87

Finding the Fourth Proportional to 112,988.16, 156,129.98 and 82,307.87

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Solution

The fourth proportional to 112,988.16, 156,129.98 and 82,307.87 is: 113,735.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,988.16 : 156,129.98 = 82,307.87 : x
  2. Step 2: Convert to fraction form
    112,988.16/156,129.98 = 82,307.87/x
  3. Step 3: Cross multiply
    112,988.16x = 156,129.98 × 82,307.87
  4. Step 4: Simplify right side
    112,988.16x = 12,850,724,904.75
  5. Step 5: Solve for x
    x = 12,850,724,904.75/112,988.16
  6. Step 6: Final answer
    x = 113,735.15

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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.