Home / 142,533.77-196,700.69-78,877.49

Finding the Fourth Proportional to 142,533.77, 196,700.69 and 78,877.49

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Solution

The fourth proportional to 142,533.77, 196,700.69 and 78,877.49 is: 108,853.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,533.77 : 196,700.69 = 78,877.49 : x
  2. Step 2: Convert to fraction form
    142,533.77/196,700.69 = 78,877.49/x
  3. Step 3: Cross multiply
    142,533.77x = 196,700.69 × 78,877.49
  4. Step 4: Simplify right side
    142,533.77x = 15,515,256,314.08
  5. Step 5: Solve for x
    x = 15,515,256,314.08/142,533.77
  6. Step 6: Final answer
    x = 108,853.20

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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.