Home / 156,971.40-235,457.10-154,379.40

Finding the Fourth Proportional to 156,971.40, 235,457.10 and 154,379.40

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Solution

The fourth proportional to 156,971.40, 235,457.10 and 154,379.40 is: 231,569.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,971.40 : 235,457.10 = 154,379.40 : x
  2. Step 2: Convert to fraction form
    156,971.40/235,457.10 = 154,379.40/x
  3. Step 3: Cross multiply
    156,971.40x = 235,457.10 × 154,379.40
  4. Step 4: Simplify right side
    156,971.40x = 36,349,725,823.74
  5. Step 5: Solve for x
    x = 36,349,725,823.74/156,971.40
  6. Step 6: Final answer
    x = 231,569.10

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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.