Home / 111,521.14-167,281.95-78,389.46

Finding the Fourth Proportional to 111,521.14, 167,281.95 and 78,389.46

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Solution

The fourth proportional to 111,521.14, 167,281.95 and 78,389.46 is: 117,584.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,521.14 : 167,281.95 = 78,389.46 : x
  2. Step 2: Convert to fraction form
    111,521.14/167,281.95 = 78,389.46/x
  3. Step 3: Cross multiply
    111,521.14x = 167,281.95 × 78,389.46
  4. Step 4: Simplify right side
    111,521.14x = 13,113,141,728.25
  5. Step 5: Solve for x
    x = 13,113,141,728.25/111,521.14
  6. Step 6: Final answer
    x = 117,584.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.