Home / 139,945.12-193,126.29-76,282.93

Finding the Fourth Proportional to 139,945.12, 193,126.29 and 76,282.93

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Solution

The fourth proportional to 139,945.12, 193,126.29 and 76,282.93 is: 105,271.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,945.12 : 193,126.29 = 76,282.93 : x
  2. Step 2: Convert to fraction form
    139,945.12/193,126.29 = 76,282.93/x
  3. Step 3: Cross multiply
    139,945.12x = 193,126.29 × 76,282.93
  4. Step 4: Simplify right side
    139,945.12x = 14,732,239,261.23
  5. Step 5: Solve for x
    x = 14,732,239,261.23/139,945.12
  6. Step 6: Final answer
    x = 105,271.55

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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.