Home / 142,239.48-196,296.12-81,810.05

Finding the Fourth Proportional to 142,239.48, 196,296.12 and 81,810.05

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Solution

The fourth proportional to 142,239.48, 196,296.12 and 81,810.05 is: 112,901.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,239.48 : 196,296.12 = 81,810.05 : x
  2. Step 2: Convert to fraction form
    142,239.48/196,296.12 = 81,810.05/x
  3. Step 3: Cross multiply
    142,239.48x = 196,296.12 × 81,810.05
  4. Step 4: Simplify right side
    142,239.48x = 16,058,995,629.74
  5. Step 5: Solve for x
    x = 16,058,995,629.74/142,239.48
  6. Step 6: Final answer
    x = 112,901.11

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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.