Home / 140,989.04-194,565-77,328.08

Finding the Fourth Proportional to 140,989.04, 194,565 and 77,328.08

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Solution

The fourth proportional to 140,989.04, 194,565 and 77,328.08 is: 106,712.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,989.04 : 194,565 = 77,328.08 : x
  2. Step 2: Convert to fraction form
    140,989.04/194,565 = 77,328.08/x
  3. Step 3: Cross multiply
    140,989.04x = 194,565 × 77,328.08
  4. Step 4: Simplify right side
    140,989.04x = 15,045,337,885.20
  5. Step 5: Solve for x
    x = 15,045,337,885.20/140,989.04
  6. Step 6: Final answer
    x = 106,712.82

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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.