Home / 105,521.16-145,606.32-84,065.58

Finding the Fourth Proportional to 105,521.16, 145,606.32 and 84,065.58

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Solution

The fourth proportional to 105,521.16, 145,606.32 and 84,065.58 is: 116,000.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,521.16 : 145,606.32 = 84,065.58 : x
  2. Step 2: Convert to fraction form
    105,521.16/145,606.32 = 84,065.58/x
  3. Step 3: Cross multiply
    105,521.16x = 145,606.32 × 84,065.58
  4. Step 4: Simplify right side
    105,521.16x = 12,240,479,742.47
  5. Step 5: Solve for x
    x = 12,240,479,742.47/105,521.16
  6. Step 6: Final answer
    x = 116,000.24

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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.