Home / 102,707.20-154,060.80-58,420.45

Finding the Fourth Proportional to 102,707.20, 154,060.80 and 58,420.45

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Solution

The fourth proportional to 102,707.20, 154,060.80 and 58,420.45 is: 87,630.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,707.20 : 154,060.80 = 58,420.45 : x
  2. Step 2: Convert to fraction form
    102,707.20/154,060.80 = 58,420.45/x
  3. Step 3: Cross multiply
    102,707.20x = 154,060.80 × 58,420.45
  4. Step 4: Simplify right side
    102,707.20x = 9,000,301,263.36
  5. Step 5: Solve for x
    x = 9,000,301,263.36/102,707.20
  6. Step 6: Final answer
    x = 87,630.68

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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.