Home / 121,430.81-167,575.60-66,985.06

Finding the Fourth Proportional to 121,430.81, 167,575.60 and 66,985.06

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Solution

The fourth proportional to 121,430.81, 167,575.60 and 66,985.06 is: 92,439.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,430.81 : 167,575.60 = 66,985.06 : x
  2. Step 2: Convert to fraction form
    121,430.81/167,575.60 = 66,985.06/x
  3. Step 3: Cross multiply
    121,430.81x = 167,575.60 × 66,985.06
  4. Step 4: Simplify right side
    121,430.81x = 11,225,061,620.54
  5. Step 5: Solve for x
    x = 11,225,061,620.54/121,430.81
  6. Step 6: Final answer
    x = 92,439.98

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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.