Home / 144,343,971.20-199,197,264.48-78,266,698.40

Finding the Fourth Proportional to 144,343,971.20, 199,197,264.48 and 78,266,698.40

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Solution

The fourth proportional to 144,343,971.20, 199,197,264.48 and 78,266,698.40 is: 108,009,445.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,343,971.20 : 199,197,264.48 = 78,266,698.40 : x
  2. Step 2: Convert to fraction form
    144,343,971.20/199,197,264.48 = 78,266,698.40/x
  3. Step 3: Cross multiply
    144,343,971.20x = 199,197,264.48 × 78,266,698.40
  4. Step 4: Simplify right side
    144,343,971.20x = 15,590,512,221,161,194
  5. Step 5: Solve for x
    x = 15,590,512,221,161,194/144,343,971.20
  6. Step 6: Final answer
    x = 108,009,445.02

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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.