Home / 138,969.10-191,777.51-75,307.01

Finding the Fourth Proportional to 138,969.10, 191,777.51 and 75,307.01

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Solution

The fourth proportional to 138,969.10, 191,777.51 and 75,307.01 is: 103,923.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,969.10 : 191,777.51 = 75,307.01 : x
  2. Step 2: Convert to fraction form
    138,969.10/191,777.51 = 75,307.01/x
  3. Step 3: Cross multiply
    138,969.10x = 191,777.51 × 75,307.01
  4. Step 4: Simplify right side
    138,969.10x = 14,442,190,486.81
  5. Step 5: Solve for x
    x = 14,442,190,486.81/138,969.10
  6. Step 6: Final answer
    x = 103,923.76

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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.