Home / 85,536,280.90-128,304,421.35-83,835,669.70

Finding the Fourth Proportional to 85,536,280.90, 128,304,421.35 and 83,835,669.70

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Solution

The fourth proportional to 85,536,280.90, 128,304,421.35 and 83,835,669.70 is: 125,753,504.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,280.90 : 128,304,421.35 = 83,835,669.70 : x
  2. Step 2: Convert to fraction form
    85,536,280.90/128,304,421.35 = 83,835,669.70/x
  3. Step 3: Cross multiply
    85,536,280.90x = 128,304,421.35 × 83,835,669.70
  4. Step 4: Simplify right side
    85,536,280.90x = 10,756,487,089,348,228
  5. Step 5: Solve for x
    x = 10,756,487,089,348,228/85,536,280.90
  6. Step 6: Final answer
    x = 125,753,504.55

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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.