Home / 98,131,981.60-147,197,972.40-90,741,671.20

Finding the Fourth Proportional to 98,131,981.60, 147,197,972.40 and 90,741,671.20

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Solution

The fourth proportional to 98,131,981.60, 147,197,972.40 and 90,741,671.20 is: 136,112,506.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,131,981.60 : 147,197,972.40 = 90,741,671.20 : x
  2. Step 2: Convert to fraction form
    98,131,981.60/147,197,972.40 = 90,741,671.20/x
  3. Step 3: Cross multiply
    98,131,981.60x = 147,197,972.40 × 90,741,671.20
  4. Step 4: Simplify right side
    98,131,981.60x = 13,356,990,012,827,476
  5. Step 5: Solve for x
    x = 13,356,990,012,827,476/98,131,981.60
  6. Step 6: Final answer
    x = 136,112,506.80

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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.