Home / 112,812.30-155,678.31-61,823.34

Finding the Fourth Proportional to 112,812.30, 155,678.31 and 61,823.34

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Solution

The fourth proportional to 112,812.30, 155,678.31 and 61,823.34 is: 85,314.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,812.30 : 155,678.31 = 61,823.34 : x
  2. Step 2: Convert to fraction form
    112,812.30/155,678.31 = 61,823.34/x
  3. Step 3: Cross multiply
    112,812.30x = 155,678.31 × 61,823.34
  4. Step 4: Simplify right side
    112,812.30x = 9,624,553,089.76
  5. Step 5: Solve for x
    x = 9,624,553,089.76/112,812.30
  6. Step 6: Final answer
    x = 85,314.75

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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.