Home / 99,970.14-137,962.98-57,528.84

Finding the Fourth Proportional to 99,970.14, 137,962.98 and 57,528.84

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Solution

The fourth proportional to 99,970.14, 137,962.98 and 57,528.84 is: 79,392.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,970.14 : 137,962.98 = 57,528.84 : x
  2. Step 2: Convert to fraction form
    99,970.14/137,962.98 = 57,528.84/x
  3. Step 3: Cross multiply
    99,970.14x = 137,962.98 × 57,528.84
  4. Step 4: Simplify right side
    99,970.14x = 7,936,850,202.34
  5. Step 5: Solve for x
    x = 7,936,850,202.34/99,970.14
  6. Step 6: Final answer
    x = 79,392.21

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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.