Home / 112,424.76-155,140.92-61,440.12

Finding the Fourth Proportional to 112,424.76, 155,140.92 and 61,440.12

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Solution

The fourth proportional to 112,424.76, 155,140.92 and 61,440.12 is: 84,784.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,424.76 : 155,140.92 = 61,440.12 : x
  2. Step 2: Convert to fraction form
    112,424.76/155,140.92 = 61,440.12/x
  3. Step 3: Cross multiply
    112,424.76x = 155,140.92 × 61,440.12
  4. Step 4: Simplify right side
    112,424.76x = 9,531,876,741.71
  5. Step 5: Solve for x
    x = 9,531,876,741.71/112,424.76
  6. Step 6: Final answer
    x = 84,784.50

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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.