Home / 129,655.02-178,923.66-70,039.02

Finding the Fourth Proportional to 129,655.02, 178,923.66 and 70,039.02

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Solution

The fourth proportional to 129,655.02, 178,923.66 and 70,039.02 is: 96,653.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,655.02 : 178,923.66 = 70,039.02 : x
  2. Step 2: Convert to fraction form
    129,655.02/178,923.66 = 70,039.02/x
  3. Step 3: Cross multiply
    129,655.02x = 178,923.66 × 70,039.02
  4. Step 4: Simplify right side
    129,655.02x = 12,531,637,801.21
  5. Step 5: Solve for x
    x = 12,531,637,801.21/129,655.02
  6. Step 6: Final answer
    x = 96,653.70

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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.