Home / 109,742.52-151,443.36-66,707.76

Finding the Fourth Proportional to 109,742.52, 151,443.36 and 66,707.76

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Solution

The fourth proportional to 109,742.52, 151,443.36 and 66,707.76 is: 92,055.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,742.52 : 151,443.36 = 66,707.76 : x
  2. Step 2: Convert to fraction form
    109,742.52/151,443.36 = 66,707.76/x
  3. Step 3: Cross multiply
    109,742.52x = 151,443.36 × 66,707.76
  4. Step 4: Simplify right side
    109,742.52x = 10,102,447,312.47
  5. Step 5: Solve for x
    x = 10,102,447,312.47/109,742.52
  6. Step 6: Final answer
    x = 92,055.91

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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.