Home / 155,441,979-214,510,968.08-84,878,079.20

Finding the Fourth Proportional to 155,441,979, 214,510,968.08 and 84,878,079.20

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Solution

The fourth proportional to 155,441,979, 214,510,968.08 and 84,878,079.20 is: 117,132,315.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,441,979 : 214,510,968.08 = 84,878,079.20 : x
  2. Step 2: Convert to fraction form
    155,441,979/214,510,968.08 = 84,878,079.20/x
  3. Step 3: Cross multiply
    155,441,979x = 214,510,968.08 × 84,878,079.20
  4. Step 4: Simplify right side
    155,441,979x = 18,207,278,937,962,912
  5. Step 5: Solve for x
    x = 18,207,278,937,962,912/155,441,979
  6. Step 6: Final answer
    x = 117,132,315.58

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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.