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Finding the Fourth Proportional to 172,671.55, 238,223.53 and 104,639.45

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Solution

The fourth proportional to 172,671.55, 238,223.53 and 104,639.45 is: 144,364.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,671.55 : 238,223.53 = 104,639.45 : x
  2. Step 2: Convert to fraction form
    172,671.55/238,223.53 = 104,639.45/x
  3. Step 3: Cross multiply
    172,671.55x = 238,223.53 × 104,639.45
  4. Step 4: Simplify right side
    172,671.55x = 24,927,578,095.94
  5. Step 5: Solve for x
    x = 24,927,578,095.94/172,671.55
  6. Step 6: Final answer
    x = 144,364.13

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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.