Home / 155,501.10-233,078.85-85,430.70

Finding the Fourth Proportional to 155,501.10, 233,078.85 and 85,430.70

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Solution

The fourth proportional to 155,501.10, 233,078.85 and 85,430.70 is: 128,051.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,501.10 : 233,078.85 = 85,430.70 : x
  2. Step 2: Convert to fraction form
    155,501.10/233,078.85 = 85,430.70/x
  3. Step 3: Cross multiply
    155,501.10x = 233,078.85 × 85,430.70
  4. Step 4: Simplify right side
    155,501.10x = 19,912,089,310.70
  5. Step 5: Solve for x
    x = 19,912,089,310.70/155,501.10
  6. Step 6: Final answer
    x = 128,051.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.