Home / 145,111.44-200,242.81-81,436.94

Finding the Fourth Proportional to 145,111.44, 200,242.81 and 81,436.94

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Solution

The fourth proportional to 145,111.44, 200,242.81 and 81,436.94 is: 112,376.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,111.44 : 200,242.81 = 81,436.94 : x
  2. Step 2: Convert to fraction form
    145,111.44/200,242.81 = 81,436.94/x
  3. Step 3: Cross multiply
    145,111.44x = 200,242.81 × 81,436.94
  4. Step 4: Simplify right side
    145,111.44x = 16,307,161,703.40
  5. Step 5: Solve for x
    x = 16,307,161,703.40/145,111.44
  6. Step 6: Final answer
    x = 112,376.82

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1.5x scale

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.