Home / 142,432.86-196,549.33-77,889.28

Finding the Fourth Proportional to 142,432.86, 196,549.33 and 77,889.28

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Solution

The fourth proportional to 142,432.86, 196,549.33 and 77,889.28 is: 107,482.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,432.86 : 196,549.33 = 77,889.28 : x
  2. Step 2: Convert to fraction form
    142,432.86/196,549.33 = 77,889.28/x
  3. Step 3: Cross multiply
    142,432.86x = 196,549.33 × 77,889.28
  4. Step 4: Simplify right side
    142,432.86x = 15,309,085,798.18
  5. Step 5: Solve for x
    x = 15,309,085,798.18/142,432.86
  6. Step 6: Final answer
    x = 107,482.82

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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.