Home / 142,331.52-196,417.12-81,077.70

Finding the Fourth Proportional to 142,331.52, 196,417.12 and 81,077.70

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Solution

The fourth proportional to 142,331.52, 196,417.12 and 81,077.70 is: 111,887.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,331.52 : 196,417.12 = 81,077.70 : x
  2. Step 2: Convert to fraction form
    142,331.52/196,417.12 = 81,077.70/x
  3. Step 3: Cross multiply
    142,331.52x = 196,417.12 × 81,077.70
  4. Step 4: Simplify right side
    142,331.52x = 15,925,047,924.84
  5. Step 5: Solve for x
    x = 15,925,047,924.84/142,331.52
  6. Step 6: Final answer
    x = 111,887.01

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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.