Home / 85,832,119.80-128,748,179.70-76,426,270.20

Finding the Fourth Proportional to 85,832,119.80, 128,748,179.70 and 76,426,270.20

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Solution

The fourth proportional to 85,832,119.80, 128,748,179.70 and 76,426,270.20 is: 114,639,405.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,832,119.80 : 128,748,179.70 = 76,426,270.20 : x
  2. Step 2: Convert to fraction form
    85,832,119.80/128,748,179.70 = 76,426,270.20/x
  3. Step 3: Cross multiply
    85,832,119.80x = 128,748,179.70 × 76,426,270.20
  4. Step 4: Simplify right side
    85,832,119.80x = 9,839,743,169,510,356
  5. Step 5: Solve for x
    x = 9,839,743,169,510,356/85,832,119.80
  6. Step 6: Final answer
    x = 114,639,405.30

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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.