Home / 112,318.76-154,988.16-64,578.98

Finding the Fourth Proportional to 112,318.76, 154,988.16 and 64,578.98

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Solution

The fourth proportional to 112,318.76, 154,988.16 and 64,578.98 is: 89,112.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,318.76 : 154,988.16 = 64,578.98 : x
  2. Step 2: Convert to fraction form
    112,318.76/154,988.16 = 64,578.98/x
  3. Step 3: Cross multiply
    112,318.76x = 154,988.16 × 64,578.98
  4. Step 4: Simplify right side
    112,318.76x = 10,008,977,284.88
  5. Step 5: Solve for x
    x = 10,008,977,284.88/112,318.76
  6. Step 6: Final answer
    x = 89,112.25

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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.