Home / 112,729.22-155,566.47-64,985.79

Finding the Fourth Proportional to 112,729.22, 155,566.47 and 64,985.79

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Solution

The fourth proportional to 112,729.22, 155,566.47 and 64,985.79 is: 89,680.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,729.22 : 155,566.47 = 64,985.79 : x
  2. Step 2: Convert to fraction form
    112,729.22/155,566.47 = 64,985.79/x
  3. Step 3: Cross multiply
    112,729.22x = 155,566.47 × 64,985.79
  4. Step 4: Simplify right side
    112,729.22x = 10,109,610,777.53
  5. Step 5: Solve for x
    x = 10,109,610,777.53/112,729.22
  6. Step 6: Final answer
    x = 89,680.48

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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.