Home / 231,965.80-347,948.70-121,143.40

Finding the Fourth Proportional to 231,965.80, 347,948.70 and 121,143.40

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Solution

The fourth proportional to 231,965.80, 347,948.70 and 121,143.40 is: 181,715.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,965.80 : 347,948.70 = 121,143.40 : x
  2. Step 2: Convert to fraction form
    231,965.80/347,948.70 = 121,143.40/x
  3. Step 3: Cross multiply
    231,965.80x = 347,948.70 × 121,143.40
  4. Step 4: Simplify right side
    231,965.80x = 42,151,688,543.58
  5. Step 5: Solve for x
    x = 42,151,688,543.58/231,965.80
  6. Step 6: Final answer
    x = 181,715.10

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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.