Home / 99,301.47-137,033.01-56,857.20

Finding the Fourth Proportional to 99,301.47, 137,033.01 and 56,857.20

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Solution

The fourth proportional to 99,301.47, 137,033.01 and 56,857.20 is: 78,461.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,301.47 : 137,033.01 = 56,857.20 : x
  2. Step 2: Convert to fraction form
    99,301.47/137,033.01 = 56,857.20/x
  3. Step 3: Cross multiply
    99,301.47x = 137,033.01 × 56,857.20
  4. Step 4: Simplify right side
    99,301.47x = 7,791,313,256.17
  5. Step 5: Solve for x
    x = 7,791,313,256.17/99,301.47
  6. Step 6: Final answer
    x = 78,461.21

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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.