Home / 112,510.80-155,239.20-64,755.36

Finding the Fourth Proportional to 112,510.80, 155,239.20 and 64,755.36

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Solution

The fourth proportional to 112,510.80, 155,239.20 and 64,755.36 is: 89,347.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,510.80 : 155,239.20 = 64,755.36 : x
  2. Step 2: Convert to fraction form
    112,510.80/155,239.20 = 64,755.36/x
  3. Step 3: Cross multiply
    112,510.80x = 155,239.20 × 64,755.36
  4. Step 4: Simplify right side
    112,510.80x = 10,052,570,282.11
  5. Step 5: Solve for x
    x = 10,052,570,282.11/112,510.80
  6. Step 6: Final answer
    x = 89,347.60

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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.