Home / 111,881.46-154,417.14-64,135.20

Finding the Fourth Proportional to 111,881.46, 154,417.14 and 64,135.20

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Solution

The fourth proportional to 111,881.46, 154,417.14 and 64,135.20 is: 88,518.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,881.46 : 154,417.14 = 64,135.20 : x
  2. Step 2: Convert to fraction form
    111,881.46/154,417.14 = 64,135.20/x
  3. Step 3: Cross multiply
    111,881.46x = 154,417.14 × 64,135.20
  4. Step 4: Simplify right side
    111,881.46x = 9,903,574,157.33
  5. Step 5: Solve for x
    x = 9,903,574,157.33/111,881.46
  6. Step 6: Final answer
    x = 88,518.46

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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.