Home / 112,531.80-155,312.97-64,812.76

Finding the Fourth Proportional to 112,531.80, 155,312.97 and 64,812.76

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Solution

The fourth proportional to 112,531.80, 155,312.97 and 64,812.76 is: 89,452.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,531.80 : 155,312.97 = 64,812.76 : x
  2. Step 2: Convert to fraction form
    112,531.80/155,312.97 = 64,812.76/x
  3. Step 3: Cross multiply
    112,531.80x = 155,312.97 × 64,812.76
  4. Step 4: Simplify right side
    112,531.80x = 10,066,262,249.50
  5. Step 5: Solve for x
    x = 10,066,262,249.50/112,531.80
  6. Step 6: Final answer
    x = 89,452.60

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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.