Home / 121,526.55-167,661.90-76,206.42

Finding the Fourth Proportional to 121,526.55, 167,661.90 and 76,206.42

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Solution

The fourth proportional to 121,526.55, 167,661.90 and 76,206.42 is: 105,136.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,526.55 : 167,661.90 = 76,206.42 : x
  2. Step 2: Convert to fraction form
    121,526.55/167,661.90 = 76,206.42/x
  3. Step 3: Cross multiply
    121,526.55x = 167,661.90 × 76,206.42
  4. Step 4: Simplify right side
    121,526.55x = 12,776,913,169.40
  5. Step 5: Solve for x
    x = 12,776,913,169.40/121,526.55
  6. Step 6: Final answer
    x = 105,136.80

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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.