Home / 112,720.32-155,421.99-89,986.46

Finding the Fourth Proportional to 112,720.32, 155,421.99 and 89,986.46

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Solution

The fourth proportional to 112,720.32, 155,421.99 and 89,986.46 is: 124,075.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,720.32 : 155,421.99 = 89,986.46 : x
  2. Step 2: Convert to fraction form
    112,720.32/155,421.99 = 89,986.46/x
  3. Step 3: Cross multiply
    112,720.32x = 155,421.99 × 89,986.46
  4. Step 4: Simplify right side
    112,720.32x = 13,985,873,909.15
  5. Step 5: Solve for x
    x = 13,985,873,909.15/112,720.32
  6. Step 6: Final answer
    x = 124,075.89

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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.