Home / 129,054.50-178,017.98-81,224.82

Finding the Fourth Proportional to 129,054.50, 178,017.98 and 81,224.82

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Solution

The fourth proportional to 129,054.50, 178,017.98 and 81,224.82 is: 112,041.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,054.50 : 178,017.98 = 81,224.82 : x
  2. Step 2: Convert to fraction form
    129,054.50/178,017.98 = 81,224.82/x
  3. Step 3: Cross multiply
    129,054.50x = 178,017.98 × 81,224.82
  4. Step 4: Simplify right side
    129,054.50x = 14,459,478,382.26
  5. Step 5: Solve for x
    x = 14,459,478,382.26/129,054.50
  6. Step 6: Final answer
    x = 112,041.64

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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.