Home / 99,253.12-136,930.32-56,788.96

Finding the Fourth Proportional to 99,253.12, 136,930.32 and 56,788.96

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Solution

The fourth proportional to 99,253.12, 136,930.32 and 56,788.96 is: 78,346.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,253.12 : 136,930.32 = 56,788.96 : x
  2. Step 2: Convert to fraction form
    99,253.12/136,930.32 = 56,788.96/x
  3. Step 3: Cross multiply
    99,253.12x = 136,930.32 × 56,788.96
  4. Step 4: Simplify right side
    99,253.12x = 7,776,130,465.27
  5. Step 5: Solve for x
    x = 7,776,130,465.27/99,253.12
  6. Step 6: Final answer
    x = 78,346.46

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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.