Home / 156,980.80-235,125.60-139,470.40

Finding the Fourth Proportional to 156,980.80, 235,125.60 and 139,470.40

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Solution

The fourth proportional to 156,980.80, 235,125.60 and 139,470.40 is: 208,898.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,980.80 : 235,125.60 = 139,470.40 : x
  2. Step 2: Convert to fraction form
    156,980.80/235,125.60 = 139,470.40/x
  3. Step 3: Cross multiply
    156,980.80x = 235,125.60 × 139,470.40
  4. Step 4: Simplify right side
    156,980.80x = 32,793,061,482.24
  5. Step 5: Solve for x
    x = 32,793,061,482.24/156,980.80
  6. Step 6: Final answer
    x = 208,898.55

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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.