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Finding the Fourth Proportional to 144,501.87, 216,785.77 and 77,940.53

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Solution

The fourth proportional to 144,501.87, 216,785.77 and 77,940.53 is: 116,928.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,501.87 : 216,785.77 = 77,940.53 : x
  2. Step 2: Convert to fraction form
    144,501.87/216,785.77 = 77,940.53/x
  3. Step 3: Cross multiply
    144,501.87x = 216,785.77 × 77,940.53
  4. Step 4: Simplify right side
    144,501.87x = 16,896,397,344.42
  5. Step 5: Solve for x
    x = 16,896,397,344.42/144,501.87
  6. Step 6: Final answer
    x = 116,928.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.