Home / 128,574,075.09-177,433,661.49-75,662,480.52

Finding the Fourth Proportional to 128,574,075.09, 177,433,661.49 and 75,662,480.52

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Solution

The fourth proportional to 128,574,075.09, 177,433,661.49 and 75,662,480.52 is: 104,415,069.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,574,075.09 : 177,433,661.49 = 75,662,480.52 : x
  2. Step 2: Convert to fraction form
    128,574,075.09/177,433,661.49 = 75,662,480.52/x
  3. Step 3: Cross multiply
    128,574,075.09x = 177,433,661.49 × 75,662,480.52
  4. Step 4: Simplify right side
    128,574,075.09x = 13,425,070,956,079,400
  5. Step 5: Solve for x
    x = 13,425,070,956,079,400/128,574,075.09
  6. Step 6: Final answer
    x = 104,415,069.26

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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.