Home / 147,623,563.20-221,435,344.80-78,748,809.60

Finding the Fourth Proportional to 147,623,563.20, 221,435,344.80 and 78,748,809.60

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Solution

The fourth proportional to 147,623,563.20, 221,435,344.80 and 78,748,809.60 is: 118,123,214.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,623,563.20 : 221,435,344.80 = 78,748,809.60 : x
  2. Step 2: Convert to fraction form
    147,623,563.20/221,435,344.80 = 78,748,809.60/x
  3. Step 3: Cross multiply
    147,623,563.20x = 221,435,344.80 × 78,748,809.60
  4. Step 4: Simplify right side
    147,623,563.20x = 17,437,769,806,365,550
  5. Step 5: Solve for x
    x = 17,437,769,806,365,550/147,623,563.20
  6. Step 6: Final answer
    x = 118,123,214.40

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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.