Home / 129,224.51-178,303.68-75,499.15

Finding the Fourth Proportional to 129,224.51, 178,303.68 and 75,499.15

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Solution

The fourth proportional to 129,224.51, 178,303.68 and 75,499.15 is: 104,173.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,224.51 : 178,303.68 = 75,499.15 : x
  2. Step 2: Convert to fraction form
    129,224.51/178,303.68 = 75,499.15/x
  3. Step 3: Cross multiply
    129,224.51x = 178,303.68 × 75,499.15
  4. Step 4: Simplify right side
    129,224.51x = 13,461,776,281.87
  5. Step 5: Solve for x
    x = 13,461,776,281.87/129,224.51
  6. Step 6: Final answer
    x = 104,173.55

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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.