Home / 129,293.72-178,222.02-118,446.20

Finding the Fourth Proportional to 129,293.72, 178,222.02 and 118,446.20

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Solution

The fourth proportional to 129,293.72, 178,222.02 and 118,446.20 is: 163,269.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,293.72 : 178,222.02 = 118,446.20 : x
  2. Step 2: Convert to fraction form
    129,293.72/178,222.02 = 118,446.20/x
  3. Step 3: Cross multiply
    129,293.72x = 178,222.02 × 118,446.20
  4. Step 4: Simplify right side
    129,293.72x = 21,109,721,025.32
  5. Step 5: Solve for x
    x = 21,109,721,025.32/129,293.72
  6. Step 6: Final answer
    x = 163,269.50

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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.