Home / 112,508.51-155,256.29-64,121.76

Finding the Fourth Proportional to 112,508.51, 155,256.29 and 64,121.76

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Solution

The fourth proportional to 112,508.51, 155,256.29 and 64,121.76 is: 88,484.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,508.51 : 155,256.29 = 64,121.76 : x
  2. Step 2: Convert to fraction form
    112,508.51/155,256.29 = 64,121.76/x
  3. Step 3: Cross multiply
    112,508.51x = 155,256.29 × 64,121.76
  4. Step 4: Simplify right side
    112,508.51x = 9,955,306,633.40
  5. Step 5: Solve for x
    x = 9,955,306,633.40/112,508.51
  6. Step 6: Final answer
    x = 88,484.92

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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.