Home / 113,871.47-157,130.69-66,115.49

Finding the Fourth Proportional to 113,871.47, 157,130.69 and 66,115.49

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Solution

The fourth proportional to 113,871.47, 157,130.69 and 66,115.49 is: 91,232.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,871.47 : 157,130.69 = 66,115.49 : x
  2. Step 2: Convert to fraction form
    113,871.47/157,130.69 = 66,115.49/x
  3. Step 3: Cross multiply
    113,871.47x = 157,130.69 × 66,115.49
  4. Step 4: Simplify right side
    113,871.47x = 10,388,772,563.39
  5. Step 5: Solve for x
    x = 10,388,772,563.39/113,871.47
  6. Step 6: Final answer
    x = 91,232.44

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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.