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Finding the Fourth Proportional to 121,168,978.80, 181,748,802.60 and 40,389,946.80

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Solution

The fourth proportional to 121,168,978.80, 181,748,802.60 and 40,389,946.80 is: 60,583,364.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,168,978.80 : 181,748,802.60 = 40,389,946.80 : x
  2. Step 2: Convert to fraction form
    121,168,978.80/181,748,802.60 = 40,389,946.80/x
  3. Step 3: Cross multiply
    121,168,978.80x = 181,748,802.60 × 40,389,946.80
  4. Step 4: Simplify right side
    121,168,978.80x = 7,340,824,467,977,701
  5. Step 5: Solve for x
    x = 7,340,824,467,977,701/121,168,978.80
  6. Step 6: Final answer
    x = 60,583,364.99

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Why These Related Problems?

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