Home / 148,555.20-205,024.32-84,878.40

Finding the Fourth Proportional to 148,555.20, 205,024.32 and 84,878.40

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Solution

The fourth proportional to 148,555.20, 205,024.32 and 84,878.40 is: 117,142.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,555.20 : 205,024.32 = 84,878.40 : x
  2. Step 2: Convert to fraction form
    148,555.20/205,024.32 = 84,878.40/x
  3. Step 3: Cross multiply
    148,555.20x = 205,024.32 × 84,878.40
  4. Step 4: Simplify right side
    148,555.20x = 17,402,136,242.69
  5. Step 5: Solve for x
    x = 17,402,136,242.69/148,555.20
  6. Step 6: Final answer
    x = 117,142.56

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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.