Home / 105,021.40-157,532.10-57,782.20

Finding the Fourth Proportional to 105,021.40, 157,532.10 and 57,782.20

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Solution

The fourth proportional to 105,021.40, 157,532.10 and 57,782.20 is: 86,673.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,021.40 : 157,532.10 = 57,782.20 : x
  2. Step 2: Convert to fraction form
    105,021.40/157,532.10 = 57,782.20/x
  3. Step 3: Cross multiply
    105,021.40x = 157,532.10 × 57,782.20
  4. Step 4: Simplify right side
    105,021.40x = 9,102,551,308.62
  5. Step 5: Solve for x
    x = 9,102,551,308.62/105,021.40
  6. Step 6: Final answer
    x = 86,673.30

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1.5x scale

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.