Home / 112,409.54-168,312.17-85,627.95

Finding the Fourth Proportional to 112,409.54, 168,312.17 and 85,627.95

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Solution

The fourth proportional to 112,409.54, 168,312.17 and 85,627.95 is: 128,211.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,409.54 : 168,312.17 = 85,627.95 : x
  2. Step 2: Convert to fraction form
    112,409.54/168,312.17 = 85,627.95/x
  3. Step 3: Cross multiply
    112,409.54x = 168,312.17 × 85,627.95
  4. Step 4: Simplify right side
    112,409.54x = 14,412,225,649.01
  5. Step 5: Solve for x
    x = 14,412,225,649.01/112,409.54
  6. Step 6: Final answer
    x = 128,211.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.