Home / 118,913.47-178,132.55-71,502.61

Finding the Fourth Proportional to 118,913.47, 178,132.55 and 71,502.61

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Solution

The fourth proportional to 118,913.47, 178,132.55 and 71,502.61 is: 107,111.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,913.47 : 178,132.55 = 71,502.61 : x
  2. Step 2: Convert to fraction form
    118,913.47/178,132.55 = 71,502.61/x
  3. Step 3: Cross multiply
    118,913.47x = 178,132.55 × 71,502.61
  4. Step 4: Simplify right side
    118,913.47x = 12,736,941,448.11
  5. Step 5: Solve for x
    x = 12,736,941,448.11/118,913.47
  6. Step 6: Final answer
    x = 107,111.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.