Home / 101,815.49-140,513.10-56,502.07

Finding the Fourth Proportional to 101,815.49, 140,513.10 and 56,502.07

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Solution

The fourth proportional to 101,815.49, 140,513.10 and 56,502.07 is: 77,977.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,815.49 : 140,513.10 = 56,502.07 : x
  2. Step 2: Convert to fraction form
    101,815.49/140,513.10 = 56,502.07/x
  3. Step 3: Cross multiply
    101,815.49x = 140,513.10 × 56,502.07
  4. Step 4: Simplify right side
    101,815.49x = 7,939,281,012.12
  5. Step 5: Solve for x
    x = 7,939,281,012.12/101,815.49
  6. Step 6: Final answer
    x = 77,977.14

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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.