Home / 99,445.09-137,199.60-56,419.51

Finding the Fourth Proportional to 99,445.09, 137,199.60 and 56,419.51

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Solution

The fourth proportional to 99,445.09, 137,199.60 and 56,419.51 is: 77,839.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,445.09 : 137,199.60 = 56,419.51 : x
  2. Step 2: Convert to fraction form
    99,445.09/137,199.60 = 56,419.51/x
  3. Step 3: Cross multiply
    99,445.09x = 137,199.60 × 56,419.51
  4. Step 4: Simplify right side
    99,445.09x = 7,740,734,204.20
  5. Step 5: Solve for x
    x = 7,740,734,204.20/99,445.09
  6. Step 6: Final answer
    x = 77,839.28

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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.