Home / 128,364,611.76-177,142,116.51-69,627,128.04

Finding the Fourth Proportional to 128,364,611.76, 177,142,116.51 and 69,627,128.04

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Solution

The fourth proportional to 128,364,611.76, 177,142,116.51 and 69,627,128.04 is: 96,084,868.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,364,611.76 : 177,142,116.51 = 69,627,128.04 : x
  2. Step 2: Convert to fraction form
    128,364,611.76/177,142,116.51 = 69,627,128.04/x
  3. Step 3: Cross multiply
    128,364,611.76x = 177,142,116.51 × 69,627,128.04
  4. Step 4: Simplify right side
    128,364,611.76x = 12,333,896,827,518,368
  5. Step 5: Solve for x
    x = 12,333,896,827,518,368/128,364,611.76
  6. Step 6: Final answer
    x = 96,084,868.39

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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.