Home / 101,260.13-139,739.04-56,548.13

Finding the Fourth Proportional to 101,260.13, 139,739.04 and 56,548.13

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Solution

The fourth proportional to 101,260.13, 139,739.04 and 56,548.13 is: 78,036.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,260.13 : 139,739.04 = 56,548.13 : x
  2. Step 2: Convert to fraction form
    101,260.13/139,739.04 = 56,548.13/x
  3. Step 3: Cross multiply
    101,260.13x = 139,739.04 × 56,548.13
  4. Step 4: Simplify right side
    101,260.13x = 7,901,980,701.30
  5. Step 5: Solve for x
    x = 7,901,980,701.30/101,260.13
  6. Step 6: Final answer
    x = 78,036.45

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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.