Home / 154,220.80-212,742.64-93,809.92

Finding the Fourth Proportional to 154,220.80, 212,742.64 and 93,809.92

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Solution

The fourth proportional to 154,220.80, 212,742.64 and 93,809.92 is: 129,407.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,220.80 : 212,742.64 = 93,809.92 : x
  2. Step 2: Convert to fraction form
    154,220.80/212,742.64 = 93,809.92/x
  3. Step 3: Cross multiply
    154,220.80x = 212,742.64 × 93,809.92
  4. Step 4: Simplify right side
    154,220.80x = 19,957,370,038.99
  5. Step 5: Solve for x
    x = 19,957,370,038.99/154,220.80
  6. Step 6: Final answer
    x = 129,407.77

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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.