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Finding the Fourth Proportional to 102,590.40, 153,885.60 and 67,569.60

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Solution

The fourth proportional to 102,590.40, 153,885.60 and 67,569.60 is: 101,354.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,590.40 : 153,885.60 = 67,569.60 : x
  2. Step 2: Convert to fraction form
    102,590.40/153,885.60 = 67,569.60/x
  3. Step 3: Cross multiply
    102,590.40x = 153,885.60 × 67,569.60
  4. Step 4: Simplify right side
    102,590.40x = 10,397,988,437.76
  5. Step 5: Solve for x
    x = 10,397,988,437.76/102,590.40
  6. Step 6: Final answer
    x = 101,354.40

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1.5x scale

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.