Home / 142,432.55-196,560.34-77,907.84

Finding the Fourth Proportional to 142,432.55, 196,560.34 and 77,907.84

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Solution

The fourth proportional to 142,432.55, 196,560.34 and 77,907.84 is: 107,514.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,432.55 : 196,560.34 = 77,907.84 : x
  2. Step 2: Convert to fraction form
    142,432.55/196,560.34 = 77,907.84/x
  3. Step 3: Cross multiply
    142,432.55x = 196,560.34 × 77,907.84
  4. Step 4: Simplify right side
    142,432.55x = 15,313,592,061.40
  5. Step 5: Solve for x
    x = 15,313,592,061.40/142,432.55
  6. Step 6: Final answer
    x = 107,514.70

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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.