Home / 121,774,142.99-168,072,730.78-72,242,010.18

Finding the Fourth Proportional to 121,774,142.99, 168,072,730.78 and 72,242,010.18

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Solution

The fourth proportional to 121,774,142.99, 168,072,730.78 and 72,242,010.18 is: 99,708,457.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,774,142.99 : 168,072,730.78 = 72,242,010.18 : x
  2. Step 2: Convert to fraction form
    121,774,142.99/168,072,730.78 = 72,242,010.18/x
  3. Step 3: Cross multiply
    121,774,142.99x = 168,072,730.78 × 72,242,010.18
  4. Step 4: Simplify right side
    121,774,142.99x = 12,141,911,927,989,160
  5. Step 5: Solve for x
    x = 12,141,911,927,989,160/121,774,142.99
  6. Step 6: Final answer
    x = 99,708,457.23

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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.