Home / 111,386.10-167,079.15-28,280.10

Finding the Fourth Proportional to 111,386.10, 167,079.15 and 28,280.10

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Solution

The fourth proportional to 111,386.10, 167,079.15 and 28,280.10 is: 42,420.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,386.10 : 167,079.15 = 28,280.10 : x
  2. Step 2: Convert to fraction form
    111,386.10/167,079.15 = 28,280.10/x
  3. Step 3: Cross multiply
    111,386.10x = 167,079.15 × 28,280.10
  4. Step 4: Simplify right side
    111,386.10x = 4,725,015,069.92
  5. Step 5: Solve for x
    x = 4,725,015,069.92/111,386.10
  6. Step 6: Final answer
    x = 42,420.15

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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.