Home / 142,237.76-196,290.95-78,577.83

Finding the Fourth Proportional to 142,237.76, 196,290.95 and 78,577.83

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Solution

The fourth proportional to 142,237.76, 196,290.95 and 78,577.83 is: 108,438.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,237.76 : 196,290.95 = 78,577.83 : x
  2. Step 2: Convert to fraction form
    142,237.76/196,290.95 = 78,577.83/x
  3. Step 3: Cross multiply
    142,237.76x = 196,290.95 × 78,577.83
  4. Step 4: Simplify right side
    142,237.76x = 15,424,116,506.75
  5. Step 5: Solve for x
    x = 15,424,116,506.75/142,237.76
  6. Step 6: Final answer
    x = 108,438.98

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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.