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Finding the Fourth Proportional to 189,389.48, 284,192.76 and 77,048.96

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Solution

The fourth proportional to 189,389.48, 284,192.76 and 77,048.96 is: 115,617.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,389.48 : 284,192.76 = 77,048.96 : x
  2. Step 2: Convert to fraction form
    189,389.48/284,192.76 = 77,048.96/x
  3. Step 3: Cross multiply
    189,389.48x = 284,192.76 × 77,048.96
  4. Step 4: Simplify right side
    189,389.48x = 21,896,756,597.53
  5. Step 5: Solve for x
    x = 21,896,756,597.53/189,389.48
  6. Step 6: Final answer
    x = 115,617.60

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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.