Home / 85,066,478.20-127,316,282.10-78,264,033.40

Finding the Fourth Proportional to 85,066,478.20, 127,316,282.10 and 78,264,033.40

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Solution

The fourth proportional to 85,066,478.20, 127,316,282.10 and 78,264,033.40 is: 117,135,280.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,066,478.20 : 127,316,282.10 = 78,264,033.40 : x
  2. Step 2: Convert to fraction form
    85,066,478.20/127,316,282.10 = 78,264,033.40/x
  3. Step 3: Cross multiply
    85,066,478.20x = 127,316,282.10 × 78,264,033.40
  4. Step 4: Simplify right side
    85,066,478.20x = 9,964,285,754,638,222
  5. Step 5: Solve for x
    x = 9,964,285,754,638,222/85,066,478.20
  6. Step 6: Final answer
    x = 117,135,280.14

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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.