Home / 128,925.02-193,386.96-40,178.60

Finding the Fourth Proportional to 128,925.02, 193,386.96 and 40,178.60

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Solution

The fourth proportional to 128,925.02, 193,386.96 and 40,178.60 is: 60,267.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,925.02 : 193,386.96 = 40,178.60 : x
  2. Step 2: Convert to fraction form
    128,925.02/193,386.96 = 40,178.60/x
  3. Step 3: Cross multiply
    128,925.02x = 193,386.96 × 40,178.60
  4. Step 4: Simplify right side
    128,925.02x = 7,770,017,311.06
  5. Step 5: Solve for x
    x = 7,770,017,311.06/128,925.02
  6. Step 6: Final answer
    x = 60,267.72

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1.5x scale

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.