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Finding the Fourth Proportional to 114,959.80, 158,643 and 64,658.80

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Solution

The fourth proportional to 114,959.80, 158,643 and 64,658.80 is: 89,228.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,959.80 : 158,643 = 64,658.80 : x
  2. Step 2: Convert to fraction form
    114,959.80/158,643 = 64,658.80/x
  3. Step 3: Cross multiply
    114,959.80x = 158,643 × 64,658.80
  4. Step 4: Simplify right side
    114,959.80x = 10,257,666,008.40
  5. Step 5: Solve for x
    x = 10,257,666,008.40/114,959.80
  6. Step 6: Final answer
    x = 89,228.29

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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.