Home / 112,901.45-155,802.79-61,914.02

Finding the Fourth Proportional to 112,901.45, 155,802.79 and 61,914.02

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Solution

The fourth proportional to 112,901.45, 155,802.79 and 61,914.02 is: 85,440.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,901.45 : 155,802.79 = 61,914.02 : x
  2. Step 2: Convert to fraction form
    112,901.45/155,802.79 = 61,914.02/x
  3. Step 3: Cross multiply
    112,901.45x = 155,802.79 × 61,914.02
  4. Step 4: Simplify right side
    112,901.45x = 9,646,377,230.89
  5. Step 5: Solve for x
    x = 9,646,377,230.89/112,901.45
  6. Step 6: Final answer
    x = 85,440.69

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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.