Home / 112,417.64-155,208.68-72,148.76

Finding the Fourth Proportional to 112,417.64, 155,208.68 and 72,148.76

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Solution

The fourth proportional to 112,417.64, 155,208.68 and 72,148.76 is: 99,611.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,417.64 : 155,208.68 = 72,148.76 : x
  2. Step 2: Convert to fraction form
    112,417.64/155,208.68 = 72,148.76/x
  3. Step 3: Cross multiply
    112,417.64x = 155,208.68 × 72,148.76
  4. Step 4: Simplify right side
    112,417.64x = 11,198,113,803.24
  5. Step 5: Solve for x
    x = 11,198,113,803.24/112,417.64
  6. Step 6: Final answer
    x = 99,611.71

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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.