Home / 113,813.12-156,973.28-72,981.14

Finding the Fourth Proportional to 113,813.12, 156,973.28 and 72,981.14

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Solution

The fourth proportional to 113,813.12, 156,973.28 and 72,981.14 is: 100,657.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,813.12 : 156,973.28 = 72,981.14 : x
  2. Step 2: Convert to fraction form
    113,813.12/156,973.28 = 72,981.14/x
  3. Step 3: Cross multiply
    113,813.12x = 156,973.28 × 72,981.14
  4. Step 4: Simplify right side
    113,813.12x = 11,456,088,923.94
  5. Step 5: Solve for x
    x = 11,456,088,923.94/113,813.12
  6. Step 6: Final answer
    x = 100,657.01

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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.