Home / 121,442.46-182,225.64-81,916.74

Finding the Fourth Proportional to 121,442.46, 182,225.64 and 81,916.74

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Solution

The fourth proportional to 121,442.46, 182,225.64 and 81,916.74 is: 122,916.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,442.46 : 182,225.64 = 81,916.74 : x
  2. Step 2: Convert to fraction form
    121,442.46/182,225.64 = 81,916.74/x
  3. Step 3: Cross multiply
    121,442.46x = 182,225.64 × 81,916.74
  4. Step 4: Simplify right side
    121,442.46x = 14,927,330,373.21
  5. Step 5: Solve for x
    x = 14,927,330,373.21/121,442.46
  6. Step 6: Final answer
    x = 122,916.90

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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.