Home / 113,850.64-157,113.28-66,115.72

Finding the Fourth Proportional to 113,850.64, 157,113.28 and 66,115.72

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Solution

The fourth proportional to 113,850.64, 157,113.28 and 66,115.72 is: 91,239.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,850.64 : 157,113.28 = 66,115.72 : x
  2. Step 2: Convert to fraction form
    113,850.64/157,113.28 = 66,115.72/x
  3. Step 3: Cross multiply
    113,850.64x = 157,113.28 × 66,115.72
  4. Step 4: Simplify right side
    113,850.64x = 10,387,657,628.76
  5. Step 5: Solve for x
    x = 10,387,657,628.76/113,850.64
  6. Step 6: Final answer
    x = 91,239.34

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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.