Home / 142,164.74-196,182.18-78,501.17

Finding the Fourth Proportional to 142,164.74, 196,182.18 and 78,501.17

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Solution

The fourth proportional to 142,164.74, 196,182.18 and 78,501.17 is: 108,328.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,164.74 : 196,182.18 = 78,501.17 : x
  2. Step 2: Convert to fraction form
    142,164.74/196,182.18 = 78,501.17/x
  3. Step 3: Cross multiply
    142,164.74x = 196,182.18 × 78,501.17
  4. Step 4: Simplify right side
    142,164.74x = 15,400,529,682.24
  5. Step 5: Solve for x
    x = 15,400,529,682.24/142,164.74
  6. Step 6: Final answer
    x = 108,328.76

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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.