Home / 147,015.81-202,880.90-81,603.92

Finding the Fourth Proportional to 147,015.81, 202,880.90 and 81,603.92

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Solution

The fourth proportional to 147,015.81, 202,880.90 and 81,603.92 is: 112,612.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,015.81 : 202,880.90 = 81,603.92 : x
  2. Step 2: Convert to fraction form
    147,015.81/202,880.90 = 81,603.92/x
  3. Step 3: Cross multiply
    147,015.81x = 202,880.90 × 81,603.92
  4. Step 4: Simplify right side
    147,015.81x = 16,555,877,444.34
  5. Step 5: Solve for x
    x = 16,555,877,444.34/147,015.81
  6. Step 6: Final answer
    x = 112,612.90

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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.