Home / 145,440,490.20-218,160,735.30-91,020,931.80

Finding the Fourth Proportional to 145,440,490.20, 218,160,735.30 and 91,020,931.80

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Solution

The fourth proportional to 145,440,490.20, 218,160,735.30 and 91,020,931.80 is: 136,531,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,440,490.20 : 218,160,735.30 = 91,020,931.80 : x
  2. Step 2: Convert to fraction form
    145,440,490.20/218,160,735.30 = 91,020,931.80/x
  3. Step 3: Cross multiply
    145,440,490.20x = 218,160,735.30 × 91,020,931.80
  4. Step 4: Simplify right side
    145,440,490.20x = 19,857,193,409,179,152
  5. Step 5: Solve for x
    x = 19,857,193,409,179,152/145,440,490.20
  6. Step 6: Final answer
    x = 136,531,397.70

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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.