Home / 129,625.16-178,888.23-72,264.47

Finding the Fourth Proportional to 129,625.16, 178,888.23 and 72,264.47

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Solution

The fourth proportional to 129,625.16, 178,888.23 and 72,264.47 is: 99,728.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,625.16 : 178,888.23 = 72,264.47 : x
  2. Step 2: Convert to fraction form
    129,625.16/178,888.23 = 72,264.47/x
  3. Step 3: Cross multiply
    129,625.16x = 178,888.23 × 72,264.47
  4. Step 4: Simplify right side
    129,625.16x = 12,927,263,130.19
  5. Step 5: Solve for x
    x = 12,927,263,130.19/129,625.16
  6. Step 6: Final answer
    x = 99,728.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.