Home / 112,860.55-155,619.93-71,970.13

Finding the Fourth Proportional to 112,860.55, 155,619.93 and 71,970.13

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Solution

The fourth proportional to 112,860.55, 155,619.93 and 71,970.13 is: 99,237.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,860.55 : 155,619.93 = 71,970.13 : x
  2. Step 2: Convert to fraction form
    112,860.55/155,619.93 = 71,970.13/x
  3. Step 3: Cross multiply
    112,860.55x = 155,619.93 × 71,970.13
  4. Step 4: Simplify right side
    112,860.55x = 11,199,986,592.69
  5. Step 5: Solve for x
    x = 11,199,986,592.69/112,860.55
  6. Step 6: Final answer
    x = 99,237.39

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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.