Home / 142,240.86-196,302.56-81,830.39

Finding the Fourth Proportional to 142,240.86, 196,302.56 and 81,830.39

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Solution

The fourth proportional to 142,240.86, 196,302.56 and 81,830.39 is: 112,931.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,240.86 : 196,302.56 = 81,830.39 : x
  2. Step 2: Convert to fraction form
    142,240.86/196,302.56 = 81,830.39/x
  3. Step 3: Cross multiply
    142,240.86x = 196,302.56 × 81,830.39
  4. Step 4: Simplify right side
    142,240.86x = 16,063,513,652.13
  5. Step 5: Solve for x
    x = 16,063,513,652.13/142,240.86
  6. Step 6: Final answer
    x = 112,931.78

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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.