Home / 129,457.02-194,204.66-66,312.86

Finding the Fourth Proportional to 129,457.02, 194,204.66 and 66,312.86

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Solution

The fourth proportional to 129,457.02, 194,204.66 and 66,312.86 is: 99,479.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,457.02 : 194,204.66 = 66,312.86 : x
  2. Step 2: Convert to fraction form
    129,457.02/194,204.66 = 66,312.86/x
  3. Step 3: Cross multiply
    129,457.02x = 194,204.66 × 66,312.86
  4. Step 4: Simplify right side
    129,457.02x = 12,878,265,127.34
  5. Step 5: Solve for x
    x = 12,878,265,127.34/129,457.02
  6. Step 6: Final answer
    x = 99,479.08

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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.