Home / 144,146,503.71-198,921,189.27-78,065,482.23

Finding the Fourth Proportional to 144,146,503.71, 198,921,189.27 and 78,065,482.23

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Solution

The fourth proportional to 144,146,503.71, 198,921,189.27 and 78,065,482.23 is: 107,729,831.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,146,503.71 : 198,921,189.27 = 78,065,482.23 : x
  2. Step 2: Convert to fraction form
    144,146,503.71/198,921,189.27 = 78,065,482.23/x
  3. Step 3: Cross multiply
    144,146,503.71x = 198,921,189.27 × 78,065,482.23
  4. Step 4: Simplify right side
    144,146,503.71x = 15,528,878,566,127,654
  5. Step 5: Solve for x
    x = 15,528,878,566,127,654/144,146,503.71
  6. Step 6: Final answer
    x = 107,729,831.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.