Home / 78,732,133.40-118,098,200.10-66,260,984.60

Finding the Fourth Proportional to 78,732,133.40, 118,098,200.10 and 66,260,984.60

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Solution

The fourth proportional to 78,732,133.40, 118,098,200.10 and 66,260,984.60 is: 99,391,476.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,133.40 : 118,098,200.10 = 66,260,984.60 : x
  2. Step 2: Convert to fraction form
    78,732,133.40/118,098,200.10 = 66,260,984.60/x
  3. Step 3: Cross multiply
    78,732,133.40x = 118,098,200.10 × 66,260,984.60
  4. Step 4: Simplify right side
    78,732,133.40x = 7,825,303,018,113,818
  5. Step 5: Solve for x
    x = 7,825,303,018,113,818/78,732,133.40
  6. Step 6: Final answer
    x = 99,391,476.90

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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.