Home / 99,133.48-136,829.46-56,705.32

Finding the Fourth Proportional to 99,133.48, 136,829.46 and 56,705.32

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Solution

The fourth proportional to 99,133.48, 136,829.46 and 56,705.32 is: 78,267.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,133.48 : 136,829.46 = 56,705.32 : x
  2. Step 2: Convert to fraction form
    99,133.48/136,829.46 = 56,705.32/x
  3. Step 3: Cross multiply
    99,133.48x = 136,829.46 × 56,705.32
  4. Step 4: Simplify right side
    99,133.48x = 7,758,958,314.73
  5. Step 5: Solve for x
    x = 7,758,958,314.73/99,133.48
  6. Step 6: Final answer
    x = 78,267.79

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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.