Home / 112,812.64-155,685.76-64,422.47

Finding the Fourth Proportional to 112,812.64, 155,685.76 and 64,422.47

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Solution

The fourth proportional to 112,812.64, 155,685.76 and 64,422.47 is: 88,905.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,812.64 : 155,685.76 = 64,422.47 : x
  2. Step 2: Convert to fraction form
    112,812.64/155,685.76 = 64,422.47/x
  3. Step 3: Cross multiply
    112,812.64x = 155,685.76 × 64,422.47
  4. Step 4: Simplify right side
    112,812.64x = 10,029,660,974.87
  5. Step 5: Solve for x
    x = 10,029,660,974.87/112,812.64
  6. Step 6: Final answer
    x = 88,905.47

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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.