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Finding the Fourth Proportional to 125,071.38, 172,598.52 and 68,482.78

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Solution

The fourth proportional to 125,071.38, 172,598.52 and 68,482.78 is: 94,506.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,071.38 : 172,598.52 = 68,482.78 : x
  2. Step 2: Convert to fraction form
    125,071.38/172,598.52 = 68,482.78/x
  3. Step 3: Cross multiply
    125,071.38x = 172,598.52 × 68,482.78
  4. Step 4: Simplify right side
    125,071.38x = 11,820,026,473.49
  5. Step 5: Solve for x
    x = 11,820,026,473.49/125,071.38
  6. Step 6: Final answer
    x = 94,506.24

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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.