Home / 112,416.66-155,133.12-61,428.30

Finding the Fourth Proportional to 112,416.66, 155,133.12 and 61,428.30

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Solution

The fourth proportional to 112,416.66, 155,133.12 and 61,428.30 is: 84,770.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,416.66 : 155,133.12 = 61,428.30 : x
  2. Step 2: Convert to fraction form
    112,416.66/155,133.12 = 61,428.30/x
  3. Step 3: Cross multiply
    112,416.66x = 155,133.12 × 61,428.30
  4. Step 4: Simplify right side
    112,416.66x = 9,529,563,920.21
  5. Step 5: Solve for x
    x = 9,529,563,920.21/112,416.66
  6. Step 6: Final answer
    x = 84,770.03

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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.