Home / 100,013.43-137,953.49-64,146.63

Finding the Fourth Proportional to 100,013.43, 137,953.49 and 64,146.63

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Solution

The fourth proportional to 100,013.43, 137,953.49 and 64,146.63 is: 88,480.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,013.43 : 137,953.49 = 64,146.63 : x
  2. Step 2: Convert to fraction form
    100,013.43/137,953.49 = 64,146.63/x
  3. Step 3: Cross multiply
    100,013.43x = 137,953.49 × 64,146.63
  4. Step 4: Simplify right side
    100,013.43x = 8,849,251,159.51
  5. Step 5: Solve for x
    x = 8,849,251,159.51/100,013.43
  6. Step 6: Final answer
    x = 88,480.63

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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.