Home / 156,675.09-216,211.78-85,055.10

Finding the Fourth Proportional to 156,675.09, 216,211.78 and 85,055.10

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Solution

The fourth proportional to 156,675.09, 216,211.78 and 85,055.10 is: 117,376.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,675.09 : 216,211.78 = 85,055.10 : x
  2. Step 2: Convert to fraction form
    156,675.09/216,211.78 = 85,055.10/x
  3. Step 3: Cross multiply
    156,675.09x = 216,211.78 × 85,055.10
  4. Step 4: Simplify right side
    156,675.09x = 18,389,913,864.60
  5. Step 5: Solve for x
    x = 18,389,913,864.60/156,675.09
  6. Step 6: Final answer
    x = 117,376.12

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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.