Home / 90,717,789.60-136,076,684.40-86,938,653.60

Finding the Fourth Proportional to 90,717,789.60, 136,076,684.40 and 86,938,653.60

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Solution

The fourth proportional to 90,717,789.60, 136,076,684.40 and 86,938,653.60 is: 130,407,980.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,717,789.60 : 136,076,684.40 = 86,938,653.60 : x
  2. Step 2: Convert to fraction form
    90,717,789.60/136,076,684.40 = 86,938,653.60/x
  3. Step 3: Cross multiply
    90,717,789.60x = 136,076,684.40 × 86,938,653.60
  4. Step 4: Simplify right side
    90,717,789.60x = 11,830,323,728,088,124
  5. Step 5: Solve for x
    x = 11,830,323,728,088,124/90,717,789.60
  6. Step 6: Final answer
    x = 130,407,980.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.