Home / 112,409.64-155,197.62-72,140.76

Finding the Fourth Proportional to 112,409.64, 155,197.62 and 72,140.76

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Solution

The fourth proportional to 112,409.64, 155,197.62 and 72,140.76 is: 99,600.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,409.64 : 155,197.62 = 72,140.76 : x
  2. Step 2: Convert to fraction form
    112,409.64/155,197.62 = 72,140.76/x
  3. Step 3: Cross multiply
    112,409.64x = 155,197.62 × 72,140.76
  4. Step 4: Simplify right side
    112,409.64x = 11,196,074,256.99
  5. Step 5: Solve for x
    x = 11,196,074,256.99/112,409.64
  6. Step 6: Final answer
    x = 99,600.66

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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.