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Finding the Fourth Proportional to 155,959.65, 215,223.35 and 84,339.45

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Solution

The fourth proportional to 155,959.65, 215,223.35 and 84,339.45 is: 116,387.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,959.65 : 215,223.35 = 84,339.45 : x
  2. Step 2: Convert to fraction form
    155,959.65/215,223.35 = 84,339.45/x
  3. Step 3: Cross multiply
    155,959.65x = 215,223.35 × 84,339.45
  4. Step 4: Simplify right side
    155,959.65x = 18,151,818,544.46
  5. Step 5: Solve for x
    x = 18,151,818,544.46/155,959.65
  6. Step 6: Final answer
    x = 116,387.92

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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.