Home / 112,735.68-155,539.80-64,982.40

Finding the Fourth Proportional to 112,735.68, 155,539.80 and 64,982.40

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Solution

The fourth proportional to 112,735.68, 155,539.80 and 64,982.40 is: 89,655.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,735.68 : 155,539.80 = 64,982.40 : x
  2. Step 2: Convert to fraction form
    112,735.68/155,539.80 = 64,982.40/x
  3. Step 3: Cross multiply
    112,735.68x = 155,539.80 × 64,982.40
  4. Step 4: Simplify right side
    112,735.68x = 10,107,349,499.52
  5. Step 5: Solve for x
    x = 10,107,349,499.52/112,735.68
  6. Step 6: Final answer
    x = 89,655.28

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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.