Home / 101,821.05-140,513.13-56,498.85

Finding the Fourth Proportional to 101,821.05, 140,513.13 and 56,498.85

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Solution

The fourth proportional to 101,821.05, 140,513.13 and 56,498.85 is: 77,968.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,821.05 : 140,513.13 = 56,498.85 : x
  2. Step 2: Convert to fraction form
    101,821.05/140,513.13 = 56,498.85/x
  3. Step 3: Cross multiply
    101,821.05x = 140,513.13 × 56,498.85
  4. Step 4: Simplify right side
    101,821.05x = 7,938,830,254.90
  5. Step 5: Solve for x
    x = 7,938,830,254.90/101,821.05
  6. Step 6: Final answer
    x = 77,968.46

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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.