Home / 156,938.60-235,438.19-66,980.00

Finding the Fourth Proportional to 156,938.60, 235,438.19 and 66,980.00

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Solution

The fourth proportional to 156,938.60, 235,438.19 and 66,980.00 is: 100,482.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,938.60 : 235,438.19 = 66,980.00 : x
  2. Step 2: Convert to fraction form
    156,938.60/235,438.19 = 66,980.00/x
  3. Step 3: Cross multiply
    156,938.60x = 235,438.19 × 66,980.00
  4. Step 4: Simplify right side
    156,938.60x = 15,769,648,454.11
  5. Step 5: Solve for x
    x = 15,769,648,454.11/156,938.60
  6. Step 6: Final answer
    x = 100,482.92

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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.