Home / 145,185,938.40-217,778,907.60-72,626,527.20

Finding the Fourth Proportional to 145,185,938.40, 217,778,907.60 and 72,626,527.20

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Solution

The fourth proportional to 145,185,938.40, 217,778,907.60 and 72,626,527.20 is: 108,939,790.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,185,938.40 : 217,778,907.60 = 72,626,527.20 : x
  2. Step 2: Convert to fraction form
    145,185,938.40/217,778,907.60 = 72,626,527.20/x
  3. Step 3: Cross multiply
    145,185,938.40x = 217,778,907.60 × 72,626,527.20
  4. Step 4: Simplify right side
    145,185,938.40x = 15,816,525,756,397,686
  5. Step 5: Solve for x
    x = 15,816,525,756,397,686/145,185,938.40
  6. Step 6: Final answer
    x = 108,939,790.80

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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.