Home / 245,921.92-339,368.64-138,492.16

Finding the Fourth Proportional to 245,921.92, 339,368.64 and 138,492.16

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Solution

The fourth proportional to 245,921.92, 339,368.64 and 138,492.16 is: 191,117.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,921.92 : 339,368.64 = 138,492.16 : x
  2. Step 2: Convert to fraction form
    245,921.92/339,368.64 = 138,492.16/x
  3. Step 3: Cross multiply
    245,921.92x = 339,368.64 × 138,492.16
  4. Step 4: Simplify right side
    245,921.92x = 46,999,895,989.86
  5. Step 5: Solve for x
    x = 46,999,895,989.86/245,921.92
  6. Step 6: Final answer
    x = 191,117.15

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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.