Home / 112,767.04-155,638.56-65,022.40

Finding the Fourth Proportional to 112,767.04, 155,638.56 and 65,022.40

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Solution

The fourth proportional to 112,767.04, 155,638.56 and 65,022.40 is: 89,742.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,767.04 : 155,638.56 = 65,022.40 : x
  2. Step 2: Convert to fraction form
    112,767.04/155,638.56 = 65,022.40/x
  3. Step 3: Cross multiply
    112,767.04x = 155,638.56 × 65,022.40
  4. Step 4: Simplify right side
    112,767.04x = 10,119,992,703.74
  5. Step 5: Solve for x
    x = 10,119,992,703.74/112,767.04
  6. Step 6: Final answer
    x = 89,742.47

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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.