Home / 79,106,971.20-118,660,456.80-65,502,081.60

Finding the Fourth Proportional to 79,106,971.20, 118,660,456.80 and 65,502,081.60

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Solution

The fourth proportional to 79,106,971.20, 118,660,456.80 and 65,502,081.60 is: 98,253,122.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,106,971.20 : 118,660,456.80 = 65,502,081.60 : x
  2. Step 2: Convert to fraction form
    79,106,971.20/118,660,456.80 = 65,502,081.60/x
  3. Step 3: Cross multiply
    79,106,971.20x = 118,660,456.80 × 65,502,081.60
  4. Step 4: Simplify right side
    79,106,971.20x = 7,772,506,924,006,875
  5. Step 5: Solve for x
    x = 7,772,506,924,006,875/79,106,971.20
  6. Step 6: Final answer
    x = 98,253,122.40

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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.