Home / 142,261.07-196,303.55-78,595.07

Finding the Fourth Proportional to 142,261.07, 196,303.55 and 78,595.07

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Solution

The fourth proportional to 142,261.07, 196,303.55 and 78,595.07 is: 108,451.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,261.07 : 196,303.55 = 78,595.07 : x
  2. Step 2: Convert to fraction form
    142,261.07/196,303.55 = 78,595.07/x
  3. Step 3: Cross multiply
    142,261.07x = 196,303.55 × 78,595.07
  4. Step 4: Simplify right side
    142,261.07x = 15,428,490,860.52
  5. Step 5: Solve for x
    x = 15,428,490,860.52/142,261.07
  6. Step 6: Final answer
    x = 108,451.95

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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.