Home / 120,931.12-181,095-76,423.60

Finding the Fourth Proportional to 120,931.12, 181,095 and 76,423.60

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Solution

The fourth proportional to 120,931.12, 181,095 and 76,423.60 is: 114,444.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,931.12 : 181,095 = 76,423.60 : x
  2. Step 2: Convert to fraction form
    120,931.12/181,095 = 76,423.60/x
  3. Step 3: Cross multiply
    120,931.12x = 181,095 × 76,423.60
  4. Step 4: Simplify right side
    120,931.12x = 13,839,931,842.00
  5. Step 5: Solve for x
    x = 13,839,931,842.00/120,931.12
  6. Step 6: Final answer
    x = 114,444.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.