Home / 145,806,422.40-218,709,633.60-85,190,947.20

Finding the Fourth Proportional to 145,806,422.40, 218,709,633.60 and 85,190,947.20

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Solution

The fourth proportional to 145,806,422.40, 218,709,633.60 and 85,190,947.20 is: 127,786,420.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,806,422.40 : 218,709,633.60 = 85,190,947.20 : x
  2. Step 2: Convert to fraction form
    145,806,422.40/218,709,633.60 = 85,190,947.20/x
  3. Step 3: Cross multiply
    145,806,422.40x = 218,709,633.60 × 85,190,947.20
  4. Step 4: Simplify right side
    145,806,422.40x = 18,632,080,848,148,948
  5. Step 5: Solve for x
    x = 18,632,080,848,148,948/145,806,422.40
  6. Step 6: Final answer
    x = 127,786,420.80

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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.