Home / 142,240.95-196,298.13-81,811.50

Finding the Fourth Proportional to 142,240.95, 196,298.13 and 81,811.50

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Solution

The fourth proportional to 142,240.95, 196,298.13 and 81,811.50 is: 112,903.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,240.95 : 196,298.13 = 81,811.50 : x
  2. Step 2: Convert to fraction form
    142,240.95/196,298.13 = 81,811.50/x
  3. Step 3: Cross multiply
    142,240.95x = 196,298.13 × 81,811.50
  4. Step 4: Simplify right side
    142,240.95x = 16,059,444,462.50
  5. Step 5: Solve for x
    x = 16,059,444,462.50/142,240.95
  6. Step 6: Final answer
    x = 112,903.10

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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.