Home / 128,255,276-177,011,190.60-81,216,642.80

Finding the Fourth Proportional to 128,255,276, 177,011,190.60 and 81,216,642.80

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Solution

The fourth proportional to 128,255,276, 177,011,190.60 and 81,216,642.80 is: 112,090,941.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,255,276 : 177,011,190.60 = 81,216,642.80 : x
  2. Step 2: Convert to fraction form
    128,255,276/177,011,190.60 = 81,216,642.80/x
  3. Step 3: Cross multiply
    128,255,276x = 177,011,190.60 × 81,216,642.80
  4. Step 4: Simplify right side
    128,255,276x = 14,376,254,638,562,916
  5. Step 5: Solve for x
    x = 14,376,254,638,562,916/128,255,276
  6. Step 6: Final answer
    x = 112,090,941.50

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1.5x scale

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.