Home / 113,878.85-157,140.88-66,122.87

Finding the Fourth Proportional to 113,878.85, 157,140.88 and 66,122.87

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Solution

The fourth proportional to 113,878.85, 157,140.88 and 66,122.87 is: 91,242.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,878.85 : 157,140.88 = 66,122.87 : x
  2. Step 2: Convert to fraction form
    113,878.85/157,140.88 = 66,122.87/x
  3. Step 3: Cross multiply
    113,878.85x = 157,140.88 × 66,122.87
  4. Step 4: Simplify right side
    113,878.85x = 10,390,605,028.91
  5. Step 5: Solve for x
    x = 10,390,605,028.91/113,878.85
  6. Step 6: Final answer
    x = 91,242.63

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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.