Home / 139,901.56-193,064.40-76,239.36

Finding the Fourth Proportional to 139,901.56, 193,064.40 and 76,239.36

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Solution

The fourth proportional to 139,901.56, 193,064.40 and 76,239.36 is: 105,210.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,901.56 : 193,064.40 = 76,239.36 : x
  2. Step 2: Convert to fraction form
    139,901.56/193,064.40 = 76,239.36/x
  3. Step 3: Cross multiply
    139,901.56x = 193,064.40 × 76,239.36
  4. Step 4: Simplify right side
    139,901.56x = 14,719,106,294.78
  5. Step 5: Solve for x
    x = 14,719,106,294.78/139,901.56
  6. Step 6: Final answer
    x = 105,210.45

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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.