Home / 113,973.12-157,272.30-66,225.78

Finding the Fourth Proportional to 113,973.12, 157,272.30 and 66,225.78

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Solution

The fourth proportional to 113,973.12, 157,272.30 and 66,225.78 is: 91,385.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,973.12 : 157,272.30 = 66,225.78 : x
  2. Step 2: Convert to fraction form
    113,973.12/157,272.30 = 66,225.78/x
  3. Step 3: Cross multiply
    113,973.12x = 157,272.30 × 66,225.78
  4. Step 4: Simplify right side
    113,973.12x = 10,415,480,739.89
  5. Step 5: Solve for x
    x = 10,415,480,739.89/113,973.12
  6. Step 6: Final answer
    x = 91,385.41

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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.