Home / 112,412.64-155,201.76-72,143.76

Finding the Fourth Proportional to 112,412.64, 155,201.76 and 72,143.76

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Solution

The fourth proportional to 112,412.64, 155,201.76 and 72,143.76 is: 99,604.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,412.64 : 155,201.76 = 72,143.76 : x
  2. Step 2: Convert to fraction form
    112,412.64/155,201.76 = 72,143.76/x
  3. Step 3: Cross multiply
    112,412.64x = 155,201.76 × 72,143.76
  4. Step 4: Simplify right side
    112,412.64x = 11,196,838,525.02
  5. Step 5: Solve for x
    x = 11,196,838,525.02/112,412.64
  6. Step 6: Final answer
    x = 99,604.80

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1.5x scale

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.