Home / 102,021.40-153,032.10-101,438.20

Finding the Fourth Proportional to 102,021.40, 153,032.10 and 101,438.20

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Solution

The fourth proportional to 102,021.40, 153,032.10 and 101,438.20 is: 152,157.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,021.40 : 153,032.10 = 101,438.20 : x
  2. Step 2: Convert to fraction form
    102,021.40/153,032.10 = 101,438.20/x
  3. Step 3: Cross multiply
    102,021.40x = 153,032.10 × 101,438.20
  4. Step 4: Simplify right side
    102,021.40x = 15,523,300,766.22
  5. Step 5: Solve for x
    x = 15,523,300,766.22/102,021.40
  6. Step 6: Final answer
    x = 152,157.30

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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.