Home / 129,054.60-178,066.26-72,462.24

Finding the Fourth Proportional to 129,054.60, 178,066.26 and 72,462.24

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Solution

The fourth proportional to 129,054.60, 178,066.26 and 72,462.24 is: 99,981.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,054.60 : 178,066.26 = 72,462.24 : x
  2. Step 2: Convert to fraction form
    129,054.60/178,066.26 = 72,462.24/x
  3. Step 3: Cross multiply
    129,054.60x = 178,066.26 × 72,462.24
  4. Step 4: Simplify right side
    129,054.60x = 12,903,080,068.02
  5. Step 5: Solve for x
    x = 12,903,080,068.02/129,054.60
  6. Step 6: Final answer
    x = 99,981.56

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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.