Home / 85,536,658.40-128,304,987.60-83,836,047.20

Finding the Fourth Proportional to 85,536,658.40, 128,304,987.60 and 83,836,047.20

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Solution

The fourth proportional to 85,536,658.40, 128,304,987.60 and 83,836,047.20 is: 125,754,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,658.40 : 128,304,987.60 = 83,836,047.20 : x
  2. Step 2: Convert to fraction form
    85,536,658.40/128,304,987.60 = 83,836,047.20/x
  3. Step 3: Cross multiply
    85,536,658.40x = 128,304,987.60 × 83,836,047.20
  4. Step 4: Simplify right side
    85,536,658.40x = 10,756,582,996,429,014
  5. Step 5: Solve for x
    x = 10,756,582,996,429,014/85,536,658.40
  6. Step 6: Final answer
    x = 125,754,070.80

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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.