Home / 110,749.16-153,033.75-78,862.70

Finding the Fourth Proportional to 110,749.16, 153,033.75 and 78,862.70

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Solution

The fourth proportional to 110,749.16, 153,033.75 and 78,862.70 is: 108,972.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,749.16 : 153,033.75 = 78,862.70 : x
  2. Step 2: Convert to fraction form
    110,749.16/153,033.75 = 78,862.70/x
  3. Step 3: Cross multiply
    110,749.16x = 153,033.75 × 78,862.70
  4. Step 4: Simplify right side
    110,749.16x = 12,068,653,950.96
  5. Step 5: Solve for x
    x = 12,068,653,950.96/110,749.16
  6. Step 6: Final answer
    x = 108,972.88

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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.