Home / 156,931.48-216,566.46-85,312.12

Finding the Fourth Proportional to 156,931.48, 216,566.46 and 85,312.12

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Solution

The fourth proportional to 156,931.48, 216,566.46 and 85,312.12 is: 117,731.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,931.48 : 216,566.46 = 85,312.12 : x
  2. Step 2: Convert to fraction form
    156,931.48/216,566.46 = 85,312.12/x
  3. Step 3: Cross multiply
    156,931.48x = 216,566.46 × 85,312.12
  4. Step 4: Simplify right side
    156,931.48x = 18,475,743,823.50
  5. Step 5: Solve for x
    x = 18,475,743,823.50/156,931.48
  6. Step 6: Final answer
    x = 117,731.28

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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.