Home / 105,582.15-158,005.07-86,384.92

Finding the Fourth Proportional to 105,582.15, 158,005.07 and 86,384.92

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Solution

The fourth proportional to 105,582.15, 158,005.07 and 86,384.92 is: 129,276.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,582.15 : 158,005.07 = 86,384.92 : x
  2. Step 2: Convert to fraction form
    105,582.15/158,005.07 = 86,384.92/x
  3. Step 3: Cross multiply
    105,582.15x = 158,005.07 × 86,384.92
  4. Step 4: Simplify right side
    105,582.15x = 13,649,254,899.62
  5. Step 5: Solve for x
    x = 13,649,254,899.62/105,582.15
  6. Step 6: Final answer
    x = 129,276.16

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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.