Home / 128,602,309.10-177,486,400.96-76,391,551.04

Finding the Fourth Proportional to 128,602,309.10, 177,486,400.96 and 76,391,551.04

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Solution

The fourth proportional to 128,602,309.10, 177,486,400.96 and 76,391,551.04 is: 105,429,378.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,602,309.10 : 177,486,400.96 = 76,391,551.04 : x
  2. Step 2: Convert to fraction form
    128,602,309.10/177,486,400.96 = 76,391,551.04/x
  3. Step 3: Cross multiply
    128,602,309.10x = 177,486,400.96 × 76,391,551.04
  4. Step 4: Simplify right side
    128,602,309.10x = 13,558,461,457,841,746
  5. Step 5: Solve for x
    x = 13,558,461,457,841,746/128,602,309.10
  6. Step 6: Final answer
    x = 105,429,378.00

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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.