Home / 112,446.10-155,160.63-72,214.37

Finding the Fourth Proportional to 112,446.10, 155,160.63 and 72,214.37

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Solution

The fourth proportional to 112,446.10, 155,160.63 and 72,214.37 is: 99,646.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,446.10 : 155,160.63 = 72,214.37 : x
  2. Step 2: Convert to fraction form
    112,446.10/155,160.63 = 72,214.37/x
  3. Step 3: Cross multiply
    112,446.10x = 155,160.63 × 72,214.37
  4. Step 4: Simplify right side
    112,446.10x = 11,204,827,144.25
  5. Step 5: Solve for x
    x = 11,204,827,144.25/112,446.10
  6. Step 6: Final answer
    x = 99,646.21

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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.