Home / 129,541.02-178,762.59-72,951.18

Finding the Fourth Proportional to 129,541.02, 178,762.59 and 72,951.18

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Solution

The fourth proportional to 129,541.02, 178,762.59 and 72,951.18 is: 100,670.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,541.02 : 178,762.59 = 72,951.18 : x
  2. Step 2: Convert to fraction form
    129,541.02/178,762.59 = 72,951.18/x
  3. Step 3: Cross multiply
    129,541.02x = 178,762.59 × 72,951.18
  4. Step 4: Simplify right side
    129,541.02x = 13,040,941,880.36
  5. Step 5: Solve for x
    x = 13,040,941,880.36/129,541.02
  6. Step 6: Final answer
    x = 100,670.37

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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.