Home / 128,304,085.70-192,456,128.55-42,051,211.40

Finding the Fourth Proportional to 128,304,085.70, 192,456,128.55 and 42,051,211.40

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Solution

The fourth proportional to 128,304,085.70, 192,456,128.55 and 42,051,211.40 is: 63,076,817.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,085.70 : 192,456,128.55 = 42,051,211.40 : x
  2. Step 2: Convert to fraction form
    128,304,085.70/192,456,128.55 = 42,051,211.40/x
  3. Step 3: Cross multiply
    128,304,085.70x = 192,456,128.55 × 42,051,211.40
  4. Step 4: Simplify right side
    128,304,085.70x = 8,093,013,346,881,626
  5. Step 5: Solve for x
    x = 8,093,013,346,881,626/128,304,085.70
  6. Step 6: Final answer
    x = 63,076,817.10

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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.