Home / 105,988.36-159,013.47-42,776.20

Finding the Fourth Proportional to 105,988.36, 159,013.47 and 42,776.20

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Solution

The fourth proportional to 105,988.36, 159,013.47 and 42,776.20 is: 64,176.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,988.36 : 159,013.47 = 42,776.20 : x
  2. Step 2: Convert to fraction form
    105,988.36/159,013.47 = 42,776.20/x
  3. Step 3: Cross multiply
    105,988.36x = 159,013.47 × 42,776.20
  4. Step 4: Simplify right side
    105,988.36x = 6,801,992,053.82
  5. Step 5: Solve for x
    x = 6,801,992,053.82/105,988.36
  6. Step 6: Final answer
    x = 64,176.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.