Home / 129,840.16-179,187.80-73,250.32

Finding the Fourth Proportional to 129,840.16, 179,187.80 and 73,250.32

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Solution

The fourth proportional to 129,840.16, 179,187.80 and 73,250.32 is: 101,090.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,840.16 : 179,187.80 = 73,250.32 : x
  2. Step 2: Convert to fraction form
    129,840.16/179,187.80 = 73,250.32/x
  3. Step 3: Cross multiply
    129,840.16x = 179,187.80 × 73,250.32
  4. Step 4: Simplify right side
    129,840.16x = 13,125,563,690.10
  5. Step 5: Solve for x
    x = 13,125,563,690.10/129,840.16
  6. Step 6: Final answer
    x = 101,090.17

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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.