Home / 99,191.78-136,851.36-56,165.40

Finding the Fourth Proportional to 99,191.78, 136,851.36 and 56,165.40

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Solution

The fourth proportional to 99,191.78, 136,851.36 and 56,165.40 is: 77,489.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,191.78 : 136,851.36 = 56,165.40 : x
  2. Step 2: Convert to fraction form
    99,191.78/136,851.36 = 56,165.40/x
  3. Step 3: Cross multiply
    99,191.78x = 136,851.36 × 56,165.40
  4. Step 4: Simplify right side
    99,191.78x = 7,686,311,374.94
  5. Step 5: Solve for x
    x = 7,686,311,374.94/99,191.78
  6. Step 6: Final answer
    x = 77,489.40

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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.