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Finding the Fourth Proportional to 114,721.79, 158,271.84 and 84,578.76

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Solution

The fourth proportional to 114,721.79, 158,271.84 and 84,578.76 is: 116,686.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,721.79 : 158,271.84 = 84,578.76 : x
  2. Step 2: Convert to fraction form
    114,721.79/158,271.84 = 84,578.76/x
  3. Step 3: Cross multiply
    114,721.79x = 158,271.84 × 84,578.76
  4. Step 4: Simplify right side
    114,721.79x = 13,386,435,970.12
  5. Step 5: Solve for x
    x = 13,386,435,970.12/114,721.79
  6. Step 6: Final answer
    x = 116,686.09

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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.