Home / 156,931.88-216,570.24-85,316.72

Finding the Fourth Proportional to 156,931.88, 216,570.24 and 85,316.72

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Solution

The fourth proportional to 156,931.88, 216,570.24 and 85,316.72 is: 117,739.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,931.88 : 216,570.24 = 85,316.72 : x
  2. Step 2: Convert to fraction form
    156,931.88/216,570.24 = 85,316.72/x
  3. Step 3: Cross multiply
    156,931.88x = 216,570.24 × 85,316.72
  4. Step 4: Simplify right side
    156,931.88x = 18,477,062,526.41
  5. Step 5: Solve for x
    x = 18,477,062,526.41/156,931.88
  6. Step 6: Final answer
    x = 117,739.38

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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.